Getting strange values from BMS

[nayias]

Hi all,

my setup contains a

JK-B2A24S150P
Hardware Version: V10.XW
Software Version: V10.10

with 16x 280AH Cells

and an Espressif ESP32 WLAN Dev Kit Board Development Bluetooth Wifi v1 WROOM32 NodeMCU
(https://www.makershop.de/plattformen/nodemcu/espressif-esp32-dev-kit-board/)

Currently i'm trying to connect these two via cabel.

So i bougth a 4 Pin JST for the gps port and connected RX/TX with the ESP on GPIO 16/17.

My Configuration:

substitutions:
  name: jk-bms-can
  device_description: "Monitor and control a JK-BMS via UART-TTL"
  external_components_source: github://syssi/esphome-jk-bms@main
  tx_pin: GPIO17
  rx_pin: GPIO16

esphome:
  name: ${name}
  comment: ${device_description}
  project:
    name: "syssi.esphome-jk-bms"
    version: 1.3.0

esp32:
  board: az-delivery-devkit-v4
  framework:
    type: esp-idf
    version: latest

external_components:
  - source: ${external_components_source}
    refresh: 0s

wifi:
  ssid: !secret wifi_ssid
  password: !secret wifi_password

logger:
  level: debug

api:
  encryption:
    key: "XXXX"

ota:
  password: "XXXXX"

uart:
  id: uart0
  baud_rate: 115200
  rx_buffer_size: 384
  tx_pin: ${tx_pin}
  rx_pin: ${rx_pin}
  debug:
    direction: BOTH
jk_modbus:
  id: modbus0
  uart_id: uart0
  rx_timeout: 50ms

jk_bms:
  id: bms0
  jk_modbus_id: modbus0

binary_sensor:
  - platform: jk_bms
    balancing:
      name: "${name} balancing"
    balancing_switch:
      name: "${name} balancing switch"
    charging:
      name: "${name} charging"
    charging_switch:
      name: "${name} charging switch"
    discharging:
      name: "${name} discharging"
    discharging_switch:
      name: "${name} discharging switch"
    dedicated_charger_switch:
      name: "${name} dedicated charger switch"

sensor:
  - platform: jk_bms
    min_cell_voltage:
      name: "${name} min cell voltage"
    max_cell_voltage:
      name: "${name} max cell voltage"
    min_voltage_cell:
      name: "${name} min voltage cell"
    max_voltage_cell:
      name: "${name} max voltage cell"
    delta_cell_voltage:
      name: "${name} delta cell voltage"
    average_cell_voltage:
      name: "${name} average cell voltage"
    cell_voltage_1:
      name: "${name} cell voltage 1"
    cell_voltage_2:
      name: "${name} cell voltage 2"
    cell_voltage_3:
      name: "${name} cell voltage 3"
    cell_voltage_4:
      name: "${name} cell voltage 4"
    cell_voltage_5:
      name: "${name} cell voltage 5"
    cell_voltage_6:
      name: "${name} cell voltage 6"
    cell_voltage_7:
      name: "${name} cell voltage 7"
    cell_voltage_8:
      name: "${name} cell voltage 8"
    cell_voltage_9:
      name: "${name} cell voltage 9"
    cell_voltage_10:
      name: "${name} cell voltage 10"
    cell_voltage_11:
      name: "${name} cell voltage 11"
    cell_voltage_12:
      name: "${name} cell voltage 12"
    cell_voltage_13:
      name: "${name} cell voltage 13"
    cell_voltage_14:
      name: "${name} cell voltage 14"
    cell_voltage_15:
      name: "${name} cell voltage 15"
    cell_voltage_16:
      name: "${name} cell voltage 16"
    power_tube_temperature:
      name: "${name} power tube temperature"
    temperature_sensor_1:
      name: "${name} temperature sensor 1"
    temperature_sensor_2:
      name: "${name} temperature sensor 2"
    total_voltage:
      name: "${name} total voltage"
    current:
      name: "${name} current"
    power:
      name: "${name} power"
    charging_power:
      name: "${name} charging power"
    discharging_power:
      name: "${name} discharging power"
    capacity_remaining:
      name: "${name} capacity remaining"
    capacity_remaining_derived:
      name: "${name} capacity remaining derived"
    temperature_sensors:
      name: "${name} temperature sensors"
    charging_cycles:
      name: "${name} charging cycles"
    total_charging_cycle_capacity:
      name: "${name} total charging cycle capacity"
    battery_strings:
      name: "${name} battery strings"
    errors_bitmask:
      name: "${name} errors bitmask"
    operation_mode_bitmask:
      name: "${name} operation mode bitmask"
    total_voltage_overvoltage_protection:
      name: "${name} total voltage overvoltage protection"
    total_voltage_undervoltage_protection:
      name: "${name} total voltage undervoltage protection"
    cell_voltage_overvoltage_protection:
      name: "${name} cell voltage overvoltage protection"
    cell_voltage_overvoltage_recovery:
      name: "${name} cell voltage overvoltage recovery"
    cell_voltage_overvoltage_delay:
      name: "${name} cell voltage overvoltage delay"
    cell_voltage_undervoltage_protection:
      name: "${name} cell voltage undervoltage protection"
    cell_voltage_undervoltage_recovery:
      name: "${name} cell voltage undervoltage recovery"
    cell_voltage_undervoltage_delay:
      name: "${name} cell voltage undervoltage delay"
    cell_pressure_difference_protection:
      name: "${name} cell pressure difference protection"
    discharging_overcurrent_protection:
      name: "${name} discharging overcurrent protection"
    discharging_overcurrent_delay:
      name: "${name} discharging overcurrent delay"
    charging_overcurrent_protection:
      name: "${name} charging overcurrent protection"
    charging_overcurrent_delay:
      name: "${name} charging overcurrent delay"
    balance_starting_voltage:
      name: "${name} balance starting voltage"
    balance_opening_pressure_difference:
      name: "${name} balance opening pressure difference"
    power_tube_temperature_protection:
      name: "${name} power tube temperature protection"
    power_tube_temperature_recovery:
      name: "${name} power tube temperature recovery"
    temperature_sensor_temperature_protection:
      name: "${name} temperature sensor temperature protection"
    temperature_sensor_temperature_recovery:
      name: "${name} temperature sensor temperature recovery"
    temperature_sensor_temperature_difference_protection:
      name: "${name} temperature sensor temperature difference protection"
    charging_high_temperature_protection:
      name: "${name} charging high temperature protection"
    discharging_high_temperature_protection:
      name: "${name} discharging high temperature protection"
    charging_low_temperature_protection:
      name: "${name} charging low temperature protection"
    charging_low_temperature_recovery:
      name: "${name} charging low temperature recovery"
    discharging_low_temperature_protection:
      name: "${name} discharging low temperature protection"
    discharging_low_temperature_recovery:
      name: "${name} discharging low temperature recovery"
    total_battery_capacity_setting:
      name: "${name} total battery capacity setting"
    current_calibration:
      name: "${name} current calibration"
    device_address:
      name: "${name} device address"
    sleep_wait_time:
      name: "${name} sleep wait time"
    alarm_low_volume:
      name: "${name} alarm low volume"
    manufacturing_date:
      name: "${name} manufacturing date"
    total_runtime:
      name: "${name} total runtime"
#    start_current_calibration:
#      name: "${name} start current calibration"
    actual_battery_capacity:
      name: "${name} actual battery capacity"
#    protocol_version:
#      name: "${name} protocol version"

text_sensor:
  - platform: jk_bms
    errors:
      name: "${name} errors"
    operation_mode:
      name: "${name} operation mode"
    battery_type:
      name: "${name} battery type"
    password:
      name: "${name} password"
    device_type:
      name: "${name} device type"
    software_version:
      name: "${name} software version"
    manufacturer:
      name: "${name} manufacturer"
    total_runtime_formatted:
      name: "${name} total runtime formatted" 

I deleted a few cell sensor and activated the debugging but the rest is pretty standard.

Now i boot the ESP i get the these log messages:

INFO Reading configuration /config/esphome/jk-bms-can.yaml...
INFO Updating https://github.com/syssi/esphome-jk-bms.git@main
INFO Starting log output from jk-bms-can.local using esphome API
INFO Successfully connected to jk-bms-can.local
[09:14:29][I][app:102]: ESPHome version 2023.2.3 compiled on Feb 21 2023, 09:03:21
[09:14:29][I][app:104]: Project syssi.esphome-jk-bms version 1.3.0
[09:14:29][C][wifi:504]: WiFi:
[09:14:29][C][wifi:362]:   Local MAC: C8:F0:9E:A0:DD:50
[09:14:29][C][wifi:363]:   SSID: [redacted]
[09:14:29][C][wifi:364]:   IP Address: 192.168.0.212
[09:14:29][C][wifi:366]:   BSSID: [redacted]
[09:14:29][C][wifi:367]:   Hostname: 'jk-bms-can'
[09:14:29][C][wifi:369]:   Signal strength: -83 dB ▂▄▆█
[09:14:29][C][wifi:373]:   Channel: 11
[09:14:29][C][wifi:374]:   Subnet: 255.255.254.0
[09:14:29][C][wifi:375]:   Gateway: 192.168.1.1
[09:14:29][C][wifi:376]:   DNS1: 1.1.1.1
[09:14:29][C][wifi:377]:   DNS2: 192.168.1.8
[09:14:29][C][logger:293]: Logger:
[09:14:29][C][logger:294]:   Level: DEBUG
[09:14:29][C][logger:295]:   Log Baud Rate: 115200
[09:14:29][C][logger:296]:   Hardware UART: UART0
[09:14:30][C][uart.idf:116]: UART Bus:
[09:14:30][C][uart.idf:117]:   Number: 1
[09:14:30][C][uart.idf:118]:   TX Pin: GPIO17
[09:14:30][C][uart.idf:119]:   RX Pin: GPIO16
[09:14:30][C][uart.idf:121]:   RX Buffer Size: 384
[09:14:30][C][uart.idf:123]:   Baud Rate: 115200 baud
[09:14:30][C][uart.idf:124]:   Data Bits: 8
[09:14:30][C][uart.idf:125]:   Parity: NONE
[09:14:30][C][uart.idf:126]:   Stop bits: 1
[09:14:30][C][jk_modbus:097]: JkModbus:
[09:14:30][C][jk_modbus:098]:  RX timeout: 50 ms
[09:14:30][C][jk_bms:487]: JkBms:
[09:14:30][C][jk_bms:488]:   Address: 0x4E
[09:14:30][C][jk_bms:489]:   Fake traffic enabled: NO
[09:14:30][C][jk_bms:490]: Minimum Cell Voltage 'jk-bms-can min cell voltage'
[09:14:30][C][jk_bms:490]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:490]:   State Class: 'measurement'
[09:14:30][C][jk_bms:490]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:490]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:491]: Maximum Cell Voltage 'jk-bms-can max cell voltage'
[09:14:30][C][jk_bms:491]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:491]:   State Class: 'measurement'
[09:14:30][C][jk_bms:491]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:491]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:492]: Minimum Voltage Cell 'jk-bms-can min voltage cell'
[09:14:30][C][jk_bms:492]:   State Class: 'measurement'
[09:14:30][C][jk_bms:492]:   Unit of Measurement: ''
[09:14:30][C][jk_bms:492]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:492]:   Icon: 'mdi:battery-minus-outline'
[09:14:30][C][jk_bms:493]: Maximum Voltage Cell 'jk-bms-can max voltage cell'
[09:14:30][C][jk_bms:493]:   State Class: 'measurement'
[09:14:30][C][jk_bms:493]:   Unit of Measurement: ''
[09:14:30][C][jk_bms:493]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:493]:   Icon: 'mdi:battery-plus-outline'
[09:14:30][C][jk_bms:494]: Delta Cell Voltage 'jk-bms-can delta cell voltage'
[09:14:30][C][jk_bms:494]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:494]:   State Class: 'measurement'
[09:14:30][C][jk_bms:494]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:494]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:495]: Average Cell Voltage 'jk-bms-can average cell voltage'
[09:14:30][C][jk_bms:495]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:495]:   State Class: 'measurement'
[09:14:30][C][jk_bms:495]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:495]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:496]: Cell Voltage 1 'jk-bms-can cell voltage 1'
[09:14:30][C][jk_bms:496]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:496]:   State Class: 'measurement'
[09:14:30][C][jk_bms:496]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:496]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:497]: Cell Voltage 2 'jk-bms-can cell voltage 2'
[09:14:30][C][jk_bms:497]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:497]:   State Class: 'measurement'
[09:14:30][C][jk_bms:497]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:497]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:498]: Cell Voltage 3 'jk-bms-can cell voltage 3'
[09:14:30][C][jk_bms:498]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:498]:   State Class: 'measurement'
[09:14:30][C][jk_bms:498]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:498]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:499]: Cell Voltage 4 'jk-bms-can cell voltage 4'
[09:14:30][C][jk_bms:499]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:499]:   State Class: 'measurement'
[09:14:30][C][jk_bms:499]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:499]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:500]: Cell Voltage 5 'jk-bms-can cell voltage 5'
[09:14:30][C][jk_bms:500]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:500]:   State Class: 'measurement'
[09:14:30][C][jk_bms:500]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:500]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:501]: Cell Voltage 6 'jk-bms-can cell voltage 6'
[09:14:30][C][jk_bms:501]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:501]:   State Class: 'measurement'
[09:14:30][C][jk_bms:501]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:501]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:502]: Cell Voltage 7 'jk-bms-can cell voltage 7'
[09:14:30][C][jk_bms:502]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:502]:   State Class: 'measurement'
[09:14:30][C][jk_bms:502]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:502]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:503]: Cell Voltage 8 'jk-bms-can cell voltage 8'
[09:14:30][C][jk_bms:503]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:503]:   State Class: 'measurement'
[09:14:30][C][jk_bms:503]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:503]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:504]: Cell Voltage 9 'jk-bms-can cell voltage 9'
[09:14:30][C][jk_bms:504]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:504]:   State Class: 'measurement'
[09:14:30][C][jk_bms:504]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:504]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:505]: Cell Voltage 10 'jk-bms-can cell voltage 10'
[09:14:30][C][jk_bms:505]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:505]:   State Class: 'measurement'
[09:14:30][C][jk_bms:505]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:505]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:506]: Cell Voltage 11 'jk-bms-can cell voltage 11'
[09:14:30][C][jk_bms:506]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:506]:   State Class: 'measurement'
[09:14:30][C][jk_bms:506]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:506]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:507]: Cell Voltage 12 'jk-bms-can cell voltage 12'
[09:14:30][C][jk_bms:507]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:507]:   State Class: 'measurement'
[09:14:30][C][jk_bms:507]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:507]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:508]: Cell Voltage 13 'jk-bms-can cell voltage 13'
[09:14:30][C][jk_bms:508]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:508]:   State Class: 'measurement'
[09:14:30][C][jk_bms:508]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:508]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:509]: Cell Voltage 14 'jk-bms-can cell voltage 14'
[09:14:30][C][jk_bms:509]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:509]:   State Class: 'measurement'
[09:14:30][C][jk_bms:509]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:509]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:510]: Cell Voltage 15 'jk-bms-can cell voltage 15'
[09:14:30][C][jk_bms:510]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:510]:   State Class: 'measurement'
[09:14:30][C][jk_bms:510]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:510]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:511]: Cell Voltage 16 'jk-bms-can cell voltage 16'
[09:14:30][C][jk_bms:511]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:511]:   State Class: 'measurement'
[09:14:30][C][jk_bms:511]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:511]:   Accuracy Decimals: 3
[09:14:30][C][jk_bms:520]: Power Tube Temperature 'jk-bms-can power tube temperature'
[09:14:30][C][jk_bms:520]:   Device Class: 'temperature'
[09:14:30][C][jk_bms:520]:   State Class: 'measurement'
[09:14:30][C][jk_bms:520]:   Unit of Measurement: '°C'
[09:14:30][C][jk_bms:520]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:521]: Temperature Sensor 1 'jk-bms-can temperature sensor 1'
[09:14:30][C][jk_bms:521]:   Device Class: 'temperature'
[09:14:30][C][jk_bms:521]:   State Class: 'measurement'
[09:14:30][C][jk_bms:521]:   Unit of Measurement: '°C'
[09:14:30][C][jk_bms:521]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:522]: Temperature Sensor 2 'jk-bms-can temperature sensor 2'
[09:14:30][C][jk_bms:522]:   Device Class: 'temperature'
[09:14:30][C][jk_bms:522]:   State Class: 'measurement'
[09:14:30][C][jk_bms:522]:   Unit of Measurement: '°C'
[09:14:30][C][jk_bms:522]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:523]: Total Voltage 'jk-bms-can total voltage'
[09:14:30][C][jk_bms:523]:   Device Class: 'voltage'
[09:14:30][C][jk_bms:523]:   State Class: 'measurement'
[09:14:30][C][jk_bms:523]:   Unit of Measurement: 'V'
[09:14:30][C][jk_bms:523]:   Accuracy Decimals: 2
[09:14:30][C][jk_bms:524]: Current 'jk-bms-can current'
[09:14:30][C][jk_bms:524]:   Device Class: 'current'
[09:14:30][C][jk_bms:524]:   State Class: 'measurement'
[09:14:30][C][jk_bms:524]:   Unit of Measurement: 'A'
[09:14:30][C][jk_bms:524]:   Accuracy Decimals: 2
[09:14:30][C][jk_bms:524]:   Icon: 'mdi:current-dc'
[09:14:30][C][jk_bms:525]: Power 'jk-bms-can power'
[09:14:30][C][jk_bms:525]:   Device Class: 'power'
[09:14:30][C][jk_bms:525]:   State Class: 'measurement'
[09:14:30][C][jk_bms:525]:   Unit of Measurement: 'W'
[09:14:30][C][jk_bms:525]:   Accuracy Decimals: 2
[09:14:30][C][jk_bms:526]: Charging Power 'jk-bms-can charging power'
[09:14:30][C][jk_bms:526]:   Device Class: 'power'
[09:14:30][C][jk_bms:526]:   State Class: 'measurement'
[09:14:30][C][jk_bms:526]:   Unit of Measurement: 'W'
[09:14:30][C][jk_bms:526]:   Accuracy Decimals: 2
[09:14:30][C][jk_bms:527]: Discharging Power 'jk-bms-can discharging power'
[09:14:30][C][jk_bms:527]:   Device Class: 'power'
[09:14:30][C][jk_bms:527]:   State Class: 'measurement'
[09:14:30][C][jk_bms:527]:   Unit of Measurement: 'W'
[09:14:30][C][jk_bms:527]:   Accuracy Decimals: 2
[09:14:30][C][jk_bms:528]: Capacity Remaining 'jk-bms-can capacity remaining'
[09:14:30][C][jk_bms:528]:   State Class: 'measurement'
[09:14:30][C][jk_bms:528]:   Unit of Measurement: '%'
[09:14:30][C][jk_bms:528]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:528]:   Icon: 'mdi:battery-50'
[09:14:30][C][jk_bms:529]: Capacity Remaining Derived 'jk-bms-can capacity remaining derived'
[09:14:30][C][jk_bms:529]:   State Class: 'measurement'
[09:14:30][C][jk_bms:529]:   Unit of Measurement: 'Ah'
[09:14:30][C][jk_bms:529]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:529]:   Icon: 'mdi:battery-50'
[09:14:30][C][jk_bms:530]: Temperature Sensors 'jk-bms-can temperature sensors'
[09:14:30][C][jk_bms:530]:   State Class: 'measurement'
[09:14:30][C][jk_bms:530]:   Unit of Measurement: ''
[09:14:30][C][jk_bms:530]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:531]: Charging Cycles 'jk-bms-can charging cycles'
[09:14:30][C][jk_bms:531]:   State Class: 'measurement'
[09:14:30][C][jk_bms:531]:   Unit of Measurement: ''
[09:14:30][C][jk_bms:531]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:531]:   Icon: 'mdi:battery-sync'
[09:14:30][C][jk_bms:532]: Total Charging Cycle Capacity 'jk-bms-can total charging cycle capacity'
[09:14:30][C][jk_bms:532]:   State Class: 'measurement'
[09:14:30][C][jk_bms:532]:   Unit of Measurement: 'Ah'
[09:14:30][C][jk_bms:532]:   Accuracy Decimals: 0
[09:14:30][C][jk_bms:532]:   Icon: 'mdi:counter'
[09:14:30][C][jk_bms:533]: Battery Strings 'jk-bms-can battery strings'
[09:14:30][C][jk_bms:533]:   State Class: 'measurement'
[09:14:30][C][jk_bms:533]:   Unit of Measurement: ''
[09:14:30][C][jk_bms:533]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:533]:   Icon: 'mdi:car-battery'
[09:14:31][C][jk_bms:534]: Errors Bitmask 'jk-bms-can errors bitmask'
[09:14:31][C][jk_bms:534]:   State Class: 'measurement'
[09:14:31][C][jk_bms:534]:   Unit of Measurement: ''
[09:14:31][C][jk_bms:534]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:534]:   Icon: 'mdi:alert-circle-outline'
[09:14:31][C][jk_bms:535]: Operation Mode Bitmask 'jk-bms-can operation mode bitmask'
[09:14:31][C][jk_bms:535]:   State Class: 'measurement'
[09:14:31][C][jk_bms:535]:   Unit of Measurement: ''
[09:14:31][C][jk_bms:535]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:535]:   Icon: 'mdi:heart-pulse'
[09:14:31][C][jk_bms:536]: Total Voltage Overvoltage Protection 'jk-bms-can total voltage overvoltage protection'
[09:14:31][C][jk_bms:536]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:536]:   State Class: 'measurement'
[09:14:31][C][jk_bms:536]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:536]:   Accuracy Decimals: 2
[09:14:31][C][jk_bms:537]: Total Voltage Undervoltage Protection 'jk-bms-can total voltage undervoltage protection'
[09:14:31][C][jk_bms:537]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:537]:   State Class: 'measurement'
[09:14:31][C][jk_bms:537]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:537]:   Accuracy Decimals: 2
[09:14:31][C][jk_bms:538]: Cell Voltage Overvoltage Protection 'jk-bms-can cell voltage overvoltage protection'
[09:14:31][C][jk_bms:538]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:538]:   State Class: 'measurement'
[09:14:31][C][jk_bms:538]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:538]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:539]: Cell Voltage Overvoltage Recovery 'jk-bms-can cell voltage overvoltage recovery'
[09:14:31][C][jk_bms:539]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:539]:   State Class: 'measurement'
[09:14:31][C][jk_bms:539]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:539]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:540]: Cell Voltage Overvoltage Delay 'jk-bms-can cell voltage overvoltage delay'
[09:14:31][C][jk_bms:540]:   State Class: 'measurement'
[09:14:31][C][jk_bms:540]:   Unit of Measurement: 's'
[09:14:31][C][jk_bms:540]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:540]:   Icon: 'mdi:timelapse'
[09:14:31][C][jk_bms:541]: Cell Voltage Undervoltage Protection 'jk-bms-can cell voltage undervoltage protection'
[09:14:31][C][jk_bms:541]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:541]:   State Class: 'measurement'
[09:14:31][C][jk_bms:541]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:541]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:542]: Cell Voltage Undervoltage Recovery 'jk-bms-can cell voltage undervoltage recovery'
[09:14:31][C][jk_bms:542]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:542]:   State Class: 'measurement'
[09:14:31][C][jk_bms:542]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:542]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:543]: Cell Voltage Undervoltage Delay 'jk-bms-can cell voltage undervoltage delay'
[09:14:31][C][jk_bms:543]:   State Class: 'measurement'
[09:14:31][C][jk_bms:543]:   Unit of Measurement: 's'
[09:14:31][C][jk_bms:543]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:543]:   Icon: 'mdi:timelapse'
[09:14:31][C][jk_bms:544]: Cell Pressure Difference Protection 'jk-bms-can cell pressure difference protection'
[09:14:31][C][jk_bms:544]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:544]:   State Class: 'measurement'
[09:14:31][C][jk_bms:544]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:544]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:545]: Discharging Overcurrent Protection 'jk-bms-can discharging overcurrent protection'
[09:14:31][C][jk_bms:545]:   Device Class: 'current'
[09:14:31][C][jk_bms:545]:   State Class: 'measurement'
[09:14:31][C][jk_bms:545]:   Unit of Measurement: 'A'
[09:14:31][C][jk_bms:545]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:545]:   Icon: 'mdi:current-dc'
[09:14:31][C][jk_bms:546]: Discharging Overcurrent Delay 'jk-bms-can discharging overcurrent delay'
[09:14:31][C][jk_bms:546]:   State Class: 'measurement'
[09:14:31][C][jk_bms:546]:   Unit of Measurement: 's'
[09:14:31][C][jk_bms:546]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:546]:   Icon: 'mdi:timelapse'
[09:14:31][C][jk_bms:547]: Charging Overcurrent Protection 'jk-bms-can charging overcurrent protection'
[09:14:31][C][jk_bms:547]:   Device Class: 'current'
[09:14:31][C][jk_bms:547]:   State Class: 'measurement'
[09:14:31][C][jk_bms:547]:   Unit of Measurement: 'A'
[09:14:31][C][jk_bms:547]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:547]:   Icon: 'mdi:current-dc'
[09:14:31][C][jk_bms:548]: Charging Overcurrent Delay 'jk-bms-can charging overcurrent delay'
[09:14:31][C][jk_bms:548]:   State Class: 'measurement'
[09:14:31][C][jk_bms:548]:   Unit of Measurement: 's'
[09:14:31][C][jk_bms:548]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:548]:   Icon: 'mdi:timelapse'
[09:14:31][C][jk_bms:549]: Balance Starting Voltage 'jk-bms-can balance starting voltage'
[09:14:31][C][jk_bms:549]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:549]:   State Class: 'measurement'
[09:14:31][C][jk_bms:549]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:549]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:550]: Balance Opening Pressure Difference 'jk-bms-can balance opening pressure difference'
[09:14:31][C][jk_bms:550]:   Device Class: 'voltage'
[09:14:31][C][jk_bms:550]:   State Class: 'measurement'
[09:14:31][C][jk_bms:550]:   Unit of Measurement: 'V'
[09:14:31][C][jk_bms:550]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:551]: Power Tube Temperature Protection 'jk-bms-can power tube temperature protection'
[09:14:31][C][jk_bms:551]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:551]:   State Class: 'measurement'
[09:14:31][C][jk_bms:551]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:551]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:552]: Power Tube Temperature Recovery 'jk-bms-can power tube temperature recovery'
[09:14:31][C][jk_bms:552]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:552]:   State Class: 'measurement'
[09:14:31][C][jk_bms:552]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:552]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:553]: Temperature Sensor Temperature Protection 'jk-bms-can temperature sensor temperature protection'
[09:14:31][C][jk_bms:553]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:553]:   State Class: 'measurement'
[09:14:31][C][jk_bms:553]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:553]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:554]: Temperature Sensor Temperature Recovery 'jk-bms-can temperature sensor temperature recovery'
[09:14:31][C][jk_bms:554]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:554]:   State Class: 'measurement'
[09:14:31][C][jk_bms:554]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:554]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:556]: Temperature Sensor Temperature Difference Protection 'jk-bms-can temperature sensor temperature difference protection'
[09:14:31][C][jk_bms:556]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:556]:   State Class: 'measurement'
[09:14:31][C][jk_bms:556]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:556]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:557]: Charging High Temperature Protection 'jk-bms-can charging high temperature protection'
[09:14:31][C][jk_bms:557]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:557]:   State Class: 'measurement'
[09:14:31][C][jk_bms:557]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:557]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:558]: Discharging High Temperature Protection 'jk-bms-can discharging high temperature protection'
[09:14:31][C][jk_bms:558]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:558]:   State Class: 'measurement'
[09:14:31][C][jk_bms:558]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:558]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:559]: Charging Low Temperature Protection 'jk-bms-can charging low temperature protection'
[09:14:31][C][jk_bms:559]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:559]:   State Class: 'measurement'
[09:14:31][C][jk_bms:559]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:559]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:560]: Charging Low Temperature Recovery 'jk-bms-can charging low temperature recovery'
[09:14:31][C][jk_bms:560]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:560]:   State Class: 'measurement'
[09:14:31][C][jk_bms:560]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:560]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:561]: Discharging Low Temperature Protection 'jk-bms-can discharging low temperature protection'
[09:14:31][C][jk_bms:561]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:561]:   State Class: 'measurement'
[09:14:31][C][jk_bms:561]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:561]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:562]: Discharging Low Temperature Recovery 'jk-bms-can discharging low temperature recovery'
[09:14:31][C][jk_bms:562]:   Device Class: 'temperature'
[09:14:31][C][jk_bms:562]:   State Class: 'measurement'
[09:14:31][C][jk_bms:562]:   Unit of Measurement: '°C'
[09:14:31][C][jk_bms:562]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:563]: Total Battery Capacity Setting 'jk-bms-can total battery capacity setting'
[09:14:31][C][jk_bms:563]:   State Class: 'measurement'
[09:14:31][C][jk_bms:563]:   Unit of Measurement: 'Ah'
[09:14:31][C][jk_bms:563]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:563]:   Icon: 'mdi:battery-sync'
[09:14:31][C][jk_bms:564]: Current Calibration 'jk-bms-can current calibration'
[09:14:31][C][jk_bms:564]:   Device Class: 'current'
[09:14:31][C][jk_bms:564]:   State Class: 'measurement'
[09:14:31][C][jk_bms:564]:   Unit of Measurement: 'A'
[09:14:31][C][jk_bms:564]:   Accuracy Decimals: 3
[09:14:31][C][jk_bms:564]:   Icon: 'mdi:current-dc'
[09:14:31][C][jk_bms:565]: Device Address 'jk-bms-can device address'
[09:14:31][C][jk_bms:565]:   State Class: 'measurement'
[09:14:31][C][jk_bms:565]:   Unit of Measurement: ''
[09:14:31][C][jk_bms:565]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:565]:   Icon: 'mdi:identifier'
[09:14:31][C][jk_bms:566]: Battery Type 'jk-bms-can battery type'
[09:14:31][C][jk_bms:566]:   Icon: 'mdi:car-battery'
[09:14:31][C][jk_bms:567]: Sleep Wait Time 'jk-bms-can sleep wait time'
[09:14:31][C][jk_bms:567]:   State Class: 'measurement'
[09:14:31][C][jk_bms:567]:   Unit of Measurement: 's'
[09:14:31][C][jk_bms:567]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:567]:   Icon: 'mdi:timelapse'
[09:14:31][C][jk_bms:568]: Alarm Low Volume 'jk-bms-can alarm low volume'
[09:14:31][C][jk_bms:568]:   State Class: 'measurement'
[09:14:31][C][jk_bms:568]:   Unit of Measurement: '%'
[09:14:31][C][jk_bms:568]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:568]:   Icon: 'mdi:volume-high'
[09:14:31][C][jk_bms:569]: Password 'jk-bms-can password'
[09:14:31][C][jk_bms:569]:   Icon: 'mdi:lock-outline'
[09:14:31][C][jk_bms:570]: Device Type 'jk-bms-can device type'
[09:14:31][C][jk_bms:571]: Manufacturing Date 'jk-bms-can manufacturing date'
[09:14:31][C][jk_bms:571]:   State Class: 'measurement'
[09:14:31][C][jk_bms:571]:   Unit of Measurement: ''
[09:14:31][C][jk_bms:571]:   Accuracy Decimals: 0
[09:14:31][C][jk_bms:572]: Total Runtime 'jk-bms-can total runtime'
[09:14:32][C][jk_bms:572]:   State Class: 'total_increasing'
[09:14:32][C][jk_bms:572]:   Unit of Measurement: 'h'
[09:14:32][C][jk_bms:572]:   Accuracy Decimals: 0
[09:14:32][C][jk_bms:572]:   Icon: 'mdi:timelapse'
[09:14:32][C][jk_bms:573]: Software Version 'jk-bms-can software version'
[09:14:32][C][jk_bms:575]: Manufacturer 'jk-bms-can manufacturer'
[09:14:32][C][jk_bms:577]: Balancing 'jk-bms-can balancing'
[09:14:32][C][jk_bms:578]: Balancing Switch 'jk-bms-can balancing switch'
[09:14:32][C][jk_bms:579]: Charging 'jk-bms-can charging'
[09:14:32][C][jk_bms:580]: Charging Switch 'jk-bms-can charging switch'
[09:14:32][C][jk_bms:581]: Discharging 'jk-bms-can discharging'
[09:14:32][C][jk_bms:582]: Discharging Switch 'jk-bms-can discharging switch'
[09:14:32][C][jk_bms:583]: Dedicated Charger Switch 'jk-bms-can dedicated charger switch'
[09:14:32][C][jk_bms:584]: Total Runtime Formatted 'jk-bms-can total runtime formatted'
[09:14:32][C][jk_bms:584]:   Icon: 'mdi:timelapse'
[09:14:32][C][mdns:108]: mDNS:
[09:14:32][C][mdns:109]:   Hostname: jk-bms-can
[09:14:32][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[09:14:32][I][jk_bms:062]: Status frame received
[09:14:32][D][sensor:127]: 'jk-bms-can min cell voltage': Sending state 100.00000 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can max cell voltage': Sending state -100.00000 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can max voltage cell': Sending state 0.00000  with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can min voltage cell': Sending state 0.00000  with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can delta cell voltage': Sending state -200.00000 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can average cell voltage': Sending state nan V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can power tube temperature': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can temperature sensor 1': Sending state 1317.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can temperature sensor 2': Sending state -16537.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can total voltage': Sending state 317.44000 V with 2 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can current': Sending state 0.00000 A with 2 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can power': Sending state 0.00000 W with 2 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can charging power': Sending state 0.00000 W with 2 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can discharging power': Sending state 0.00000 W with 2 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can capacity remaining': Sending state 64.00000 % with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can temperature sensors': Sending state 2.00000  with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can charging cycles': Sending state 0.00000  with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can total charging cycle capacity': Sending state 1073561536.00000 Ah with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can battery strings': Sending state 64831.00000  with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can errors bitmask': Sending state 20989.00000  with 0 decimals of accuracy
[09:14:32][D][text_sensor:067]: 'jk-bms-can errors': Sending state 'Low capacity;Charging overvoltage;Discharging undervoltage;Battery over temperature;Charging overcurrent;Discharging overcurrent;Cell pressure difference;Overtemperature alarm in the battery box;309_A protection'
[09:14:32][D][sensor:127]: 'jk-bms-can operation mode bitmask': Sending state 42065.00000  with 0 decimals of accuracy
[09:14:32][D][text_sensor:067]: 'jk-bms-can operation mode': Sending state 'Charging enabled'
[09:14:32][D][binary_sensor:036]: 'jk-bms-can discharging': Sending state ON
[09:14:32][D][sensor:127]: 'jk-bms-can total voltage overvoltage protection': Sending state 163.36000 V with 2 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can total voltage undervoltage protection': Sending state 648.31000 V with 2 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can cell voltage overvoltage protection': Sending state 17.14900 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can cell voltage overvoltage recovery': Sending state 11.26400 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can cell voltage overvoltage delay': Sending state 46.00000 s with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can cell voltage undervoltage protection': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can cell voltage undervoltage recovery': Sending state 46.84200 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can cell voltage undervoltage delay': Sending state 17433.00000 s with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can cell pressure difference protection': Sending state 11.10400 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can discharging overcurrent protection': Sending state 58665.00000 A with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can discharging overcurrent delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can charging overcurrent protection': Sending state 1792.00000 A with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can charging overcurrent delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can balance starting voltage': Sending state 57.85500 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can balance opening pressure difference': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can power tube temperature protection': Sending state 2304.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can power tube temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can temperature sensor temperature protection': Sending state 40106.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can temperature sensor temperature recovery': Sending state 16168.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can temperature sensor temperature difference protection': Sending state 16447.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can charging high temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can discharging high temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can charging low temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can charging low temperature recovery': Sending state 30464.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can discharging low temperature protection': Sending state 16637.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can discharging low temperature recovery': Sending state 2062.00000 °C with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can total battery capacity setting': Sending state 53.00000 Ah with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can capacity remaining derived': Sending state 33.92000 Ah with 0 decimals of accuracy
[09:14:32][D][binary_sensor:036]: 'jk-bms-can charging switch': Sending state OFF
[09:14:32][D][binary_sensor:036]: 'jk-bms-can discharging switch': Sending state OFF
[09:14:32][D][sensor:127]: 'jk-bms-can current calibration': Sending state 15.57400 A with 3 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can device address': Sending state 64.00000  with 0 decimals of accuracy
[09:14:32][D][text_sensor:067]: 'jk-bms-can battery type': Sending state 'Unknown'
[09:14:32][D][sensor:127]: 'jk-bms-can sleep wait time': Sending state 65535.00000 s with 0 decimals of accuracy
[09:14:32][D][sensor:127]: 'jk-bms-can alarm low volume': Sending state 24.00000 % with 0 decimals of accuracy
[09:14:32][D][text_sensor:067]: 'jk-bms-can password': Sending state ''
[09:14:32][D][text_sensor:067]: 'jk-bms-can device type': Sending state 't'
[09:14:32][D][sensor:127]: 'jk-bms-can total runtime': Sending state 0.86667 h with 0 decimals of accuracy
[09:14:32][D][text_sensor:067]: 'jk-bms-can total runtime formatted': Sending state ''
[09:14:32][D][text_sensor:067]: 'jk-bms-can software version': Sending state '\xfd?\xc8T\xfd?\x86'
[09:14:32][D][sensor:127]: 'jk-bms-can actual battery capacity': Sending state 2013265920.00000 Ah with 0 decimals of accuracy
[09:14:32][D][text_sensor:067]: 'jk-bms-can manufacturer': Sending state 'k\xfb?'
[09:14:32][D][uart_debug:114]: <<< 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[09:14:32][C][ota:093]: Over-The-Air Updates:
[09:14:32][C][ota:094]:   Address: jk-bms-can.local:3232
[09:14:32][C][ota:097]:   Using Password.
[09:14:32][C][api:138]: API Server:
[09:14:32][C][api:139]:   Address: jk-bms-can.local:6053
[09:14:32][C][api:141]:   Using noise encryption: YES
[09:14:34][W][api.connection:083]: Home Assistant 2023.2.5 (::FFFF:192.168.1.3): Connection closed
[09:14:34][D][api:102]: Accepted ::FFFF:192.168.1.3
[09:14:35][D][api.connection:918]: Home Assistant 2023.2.5 (::FFFF:192.168.1.3): Connected successfully
[09:14:35][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[09:14:35][I][jk_bms:062]: Status frame received
[09:14:35][D][sensor:127]: 'jk-bms-can min cell voltage': Sending state 100.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can max cell voltage': Sending state -100.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can max voltage cell': Sending state 0.00000  with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can min voltage cell': Sending state 0.00000  with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can delta cell voltage': Sending state -200.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can average cell voltage': Sending state nan V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can power tube temperature': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can temperature sensor 1': Sending state 1317.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can temperature sensor 2': Sending state 27496.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can total voltage': Sending state 268.79001 V with 2 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can current': Sending state 0.00000 A with 2 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can power': Sending state 0.00000 W with 2 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can charging power': Sending state 0.00000 W with 2 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can discharging power': Sending state 0.00000 W with 2 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can capacity remaining': Sending state 253.00000 % with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can temperature sensors': Sending state 120.00000  with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can charging cycles': Sending state 0.00000  with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can total charging cycle capacity': Sending state 1811627776.00000 Ah with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can battery strings': Sending state 0.00000  with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can errors bitmask': Sending state 0.00000  with 0 decimals of accuracy
[09:14:35][D][text_sensor:067]: 'jk-bms-can errors': Sending state ''
[09:14:35][D][sensor:127]: 'jk-bms-can operation mode bitmask': Sending state 0.00000  with 0 decimals of accuracy
[09:14:35][D][text_sensor:067]: 'jk-bms-can operation mode': Sending state ''
[09:14:35][D][binary_sensor:036]: 'jk-bms-can discharging': Sending state OFF
[09:14:35][D][sensor:127]: 'jk-bms-can total voltage overvoltage protection': Sending state 0.00000 V with 2 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can total voltage undervoltage protection': Sending state 0.00000 V with 2 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can cell voltage overvoltage protection': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can cell voltage overvoltage recovery': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can cell voltage overvoltage delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can cell voltage undervoltage protection': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can cell voltage undervoltage recovery': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can cell voltage undervoltage delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can cell pressure difference protection': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can discharging overcurrent protection': Sending state 0.00000 A with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can discharging overcurrent delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can charging overcurrent protection': Sending state 256.00000 A with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can charging overcurrent delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can balance starting voltage': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can balance opening pressure difference': Sending state 0.00000 V with 3 decimals of accuracy
[09:14:35][D][binary_sensor:036]: 'jk-bms-can balancing switch': Sending state OFF
[09:14:35][D][sensor:127]: 'jk-bms-can power tube temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can power tube temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can temperature sensor temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can temperature sensor temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can temperature sensor temperature difference protection': Sending state 16384.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can charging high temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can discharging high temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can charging low temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can charging low temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can discharging low temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can discharging low temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can total battery capacity setting': Sending state 0.00000 Ah with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can capacity remaining derived': Sending state 0.00000 Ah with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can current calibration': Sending state 0.00000 A with 3 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can device address': Sending state 0.00000  with 0 decimals of accuracy
[09:14:35][D][text_sensor:067]: 'jk-bms-can battery type': Sending state 'Lithium Iron Phosphate'
[09:14:35][D][sensor:127]: 'jk-bms-can sleep wait time': Sending state 0.00000 s with 0 decimals of accuracy
[09:14:35][D][sensor:127]: 'jk-bms-can alarm low volume': Sending state 0.00000 % with 0 decimals of accuracy
[09:14:35][D][text_sensor:067]: 'jk-bms-can password': Sending state ''
[09:14:35][D][text_sensor:067]: 'jk-bms-can device type': Sending state '?[\xdeY\xf1\xa9\x92�'
[09:14:35][D][sensor:127]: 'jk-bms-can total runtime': Sending state 71349224.00000 h with 0 decimals of accuracy
[09:14:35][D][text_sensor:067]: 'jk-bms-can total runtime formatted': Sending state '-21y -217d -18h'
[09:14:35][D][text_sensor:067]: 'jk-bms-can software version': Sending state 'o\xdd�z\xbc\xfa\x84\xe3_\xe6��\x84�	'
[09:14:35][D][sensor:127]: 'jk-bms-can actual battery capacity': Sending state 3806371840.00000 Ah with 0 decimals of accuracy
[09:14:35][D][text_sensor:067]: 'jk-bms-can manufacturer': Sending state '\xc2\xefyZz\xb5\xa8*'
[09:14:35][D][uart_debug:114]: <<< 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29

and so on... this part repeats the whole time

[09:22:05][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[09:22:05][I][jk_bms:062]: Status frame received
[09:22:05][D][sensor:127]: 'jk-bms-can min cell voltage': Sending state 100.00000 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can max cell voltage': Sending state -100.00000 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can max voltage cell': Sending state 0.00000  with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can min voltage cell': Sending state 0.00000  with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can delta cell voltage': Sending state -200.00000 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can average cell voltage': Sending state nan V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can power tube temperature': Sending state 0.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can temperature sensor 1': Sending state 1317.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can temperature sensor 2': Sending state -668.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can total voltage': Sending state 0.00000 V with 2 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can current': Sending state 0.00000 A with 2 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can power': Sending state 0.00000 W with 2 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can charging power': Sending state 0.00000 W with 2 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can discharging power': Sending state 0.00000 W with 2 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can capacity remaining': Sending state 0.00000 % with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can temperature sensors': Sending state 112.00000  with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can charging cycles': Sending state 64831.00000  with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can total charging cycle capacity': Sending state 28.00000 Ah with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can battery strings': Sending state 64831.00000  with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can errors bitmask': Sending state 18685.00000  with 0 decimals of accuracy
[09:22:05][D][text_sensor:067]: 'jk-bms-can errors': Sending state 'Low capacity;Charging overvoltage;Discharging undervoltage;Battery over temperature;Charging overcurrent;Discharging overcurrent;Cell pressure difference;Cell undervoltage'
[09:22:05][D][sensor:127]: 'jk-bms-can operation mode bitmask': Sending state 47168.00000  with 0 decimals of accuracy
[09:22:05][D][text_sensor:067]: 'jk-bms-can operation mode': Sending state ''
[09:22:05][D][sensor:127]: 'jk-bms-can total voltage overvoltage protection': Sending state 161.81999 V with 2 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can total voltage undervoltage protection': Sending state 118.25000 V with 2 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can cell voltage overvoltage protection': Sending state 15.86900 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can cell voltage overvoltage recovery': Sending state 21.50400 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can cell voltage overvoltage delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can cell voltage undervoltage protection': Sending state 0.00000 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can cell voltage undervoltage recovery': Sending state 15.86900 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can cell voltage undervoltage delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can cell pressure difference protection': Sending state 0.00000 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can discharging overcurrent protection': Sending state 0.00000 A with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can discharging overcurrent delay': Sending state 0.00000 s with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can charging overcurrent protection': Sending state 50237.00000 A with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can charging overcurrent delay': Sending state 16383.00000 s with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can balance starting voltage': Sending state 65.53500 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can balance opening pressure difference': Sending state 15.86900 V with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can power tube temperature protection': Sending state 64831.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can power tube temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can temperature sensor temperature protection': Sending state 55357.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can temperature sensor temperature recovery': Sending state 16383.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can temperature sensor temperature difference protection': Sending state 65535.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can charging high temperature protection': Sending state 15869.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can discharging high temperature protection': Sending state 55357.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can charging low temperature protection': Sending state 16129.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can charging low temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can discharging low temperature protection': Sending state 0.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can discharging low temperature recovery': Sending state 0.00000 °C with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can total battery capacity setting': Sending state 4278190080.00000 Ah with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can capacity remaining derived': Sending state 0.00000 Ah with 0 decimals of accuracy
[09:22:05][D][binary_sensor:036]: 'jk-bms-can discharging switch': Sending state ON
[09:22:05][D][sensor:127]: 'jk-bms-can current calibration': Sending state 16.30700 A with 3 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can device address': Sending state 0.00000  with 0 decimals of accuracy
[09:22:05][D][text_sensor:067]: 'jk-bms-can battery type': Sending state 'Lithium Iron Phosphate'
[09:22:05][D][sensor:127]: 'jk-bms-can sleep wait time': Sending state 0.00000 s with 0 decimals of accuracy
[09:22:05][D][sensor:127]: 'jk-bms-can alarm low volume': Sending state 136.00000 % with 0 decimals of accuracy
[09:22:05][D][text_sensor:067]: 'jk-bms-can password': Sending state '@?7'
[09:22:05][D][text_sensor:067]: 'jk-bms-can device type': Sending state ''
[09:22:05][D][sensor:127]: 'jk-bms-can total runtime': Sending state 0.00000 h with 0 decimals of accuracy
[09:22:05][W][api.connection:1006]: Home Assistant 2023.2.5 (::FFFF:192.168.1.3): Connection reset
[09:22:05][D][text_sensor:067]: 'jk-bms-can total runtime formatted': Sending state ''
[09:22:05][D][text_sensor:067]: 'jk-bms-can software version': Sending state ''
[09:22:05][D][sensor:127]: 'jk-bms-can actual battery capacity': Sending state 809434432.00000 Ah with 0 decimals of accuracy
[09:22:05][D][text_sensor:067]: 'jk-bms-can manufacturer': Sending state ''
[09:22:05][D][uart_debug:114]: <<< 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29

if i change the the pin configuration i'm getting an invalid header error.

My current cable to the bms is a 20cm long ethernet cable but i also tried other (longer) cables.

If i connect the esp via BLE to the JK BMS everything is working fine but i need the cable connection.

Any advice what i can do?

thanks in advance,
nayias

[syssi]

Three back ticks are your friend! ;-) https://docs.github.com/en/get-started/writing-on-github/working-with-advanced-formatting/creating-and-highlighting-code-blocks

[nayias]

that was also my assumption but i was not sure. Have I missed something here or forgotten to configure?

So i checked again my cabling and saw that i had a wrong configuration (these many different colors can be a little confusing :) )

It was

rx -> rx
tx -> tx

With this configuration i was getting the local echo

Now i changed it to

tx -> rx
rx -> tx

and now i'm getting these responses:

[10:45:44][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:45:44][D][uart_debug:114]: <<< FF
[10:45:49][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:45:49][W][jk_modbus:050]: Invalid header
[10:45:49][W][jk_modbus:050]: Invalid header
[10:45:49][D][uart_debug:114]: <<< EF:FF:FF:FF:FF:FF
[10:45:54][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:45:54][D][uart_debug:114]: <<< FF
[10:45:59][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:45:59][D][uart_debug:114]: <<< FF:FF
[10:46:04][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:04][D][uart_debug:114]: <<< FF
[10:46:09][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:09][D][uart_debug:114]: <<< FF
[10:46:14][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:14][D][uart_debug:114]: <<< FF
[10:46:19][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:19][D][uart_debug:114]: <<< FF
[10:46:24][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:29][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:29][W][jk_modbus:050]: Invalid header
[10:46:29][D][uart_debug:114]: <<< FF:FF:FF
[10:46:34][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:39][D][uart_debug:114]: >>> 4E:57:00:13:00:00:00:00:06:03:00:00:00:00:00:00:68:00:00:01:29
[10:46:39][D][uart_debug:114]: <<< FF

[syssi]

Could you reduce the cable length to 10cm just for testing? Please double check your wiring. These bytes (FF:FF:FF:FF) are an indicator for bad grounding (GND). Does this photo help?

https://raw.githubusercontent.com/syssi/esphome-jk-bms/main/images/circuit.jpg

[syssi]

Where did you buy your BMS? I have the feeling some sellers doesn't enable the UART-TTL port.

[nayias]

ja FML ... it was the GND Connection.

My esp is temporarily on a bread board to test the whole setup and i was using screw clamps to connect the GND cable to the esp.

Somehow this connection didn't work. For a quick test, i plugged the cable directly into the bread board and it instantly worked.

sorry for the circumstances but it has also something good because now you have another board for your list of working boards :)

[syssi]

Done bad8b12