YamBMS 1.6.0

• New dashboards 1.6.0
• Added iBMS V3.3 board
• Updated JK-PB readme with V19 warning and SoC 100% reset solution 1 and 2
• Added board option UART flow control allows you to activate a talk_pin for the UART of your choice (e.g. WS-RS485-CAN)
• Added AtomS3 GPIOs for Atomic RS485 base (uart_esp_3)
• Disabled the reboot_timeout after 15 minutes in case of WiFi unavailability
• New Hardware highlighted documentation (LilyGo / Waveshare / M5Stack)
• New readme for LilyGo T-Connect, WS RS485-CAN and M5Stack AtomS3 boards
• Improved documentation.
• Fixed issue 83 Add esphome-pace-bms
• Fixed issue 94 Multi-BMS Seplos V3 don't work
• Fixed issue 96 Improve the SoC returned at the end of discharge
• Fixed issue 100 Improve the BMS Seplos V1 V2 examples
• Fixed issue 102 Improve Remaining Capacity when using a shunt
• Added issue 106 [FEATURE REQUEST] Temperature-based current limiting
• Fixed issue 108 [WARNING] esphome::select::Select::state` is deprecated
• Fixed issue 122 Adjust bms_name in all example YAML to something unique
• Fixed issue 128 Align the names of the shunt entities
• Fixed issue 142 Maximum capacity needs to be increased for JK_RS485 BMS
• Merged PR 76 Add Auto EOC function
• Merged PR 82 Add support for external balancer
• Merged PR 85 Adding EG4 LLV2 BMS
• Merged PR 97 Add Basen controller version with talk/flow control pin
• Merged PR 99 Basen: Use new binary sensors for charging/discharging
• Merged PR 112 Adding FLIP_C3 board
• Merged PR 117 Round requested charge/discharge current to nearest integer
• Change PR 119 Updated Power gauge (-10kW to 10kW)
• Merged PR 133 Add Studer XTM-4000 to supported inverters
• Merged PR 142 Sub device support
• Merged PR 143 Improved Cut-Off charging logic equation and documentation
• Merged PR 147 Improved CCL, DCL and Temp-based current control
• Merged PR 155 Update temperature sensor filters to reduce noise

YamBMS 1.5.8

• New Dashboards 1.5.8 compatible with CANBUS and RS485 inverter communication protocol
• Added BMS SEPLOS V3 (beta)
• Added YamBMS Web Server v3
• Added WiFi AP
• WiFi AP and Web Server credentials centralized in secrets.yaml
• Added WT32-ETH01 board
• Fixed issue 8 ETH01-EVO board - Davicom DM9051 SPI Ethernet Controller is now integrated in esphome 2025.7
• Fixed issue 24 [JK-PB] SoC never reaches 100%
• Fixed issue 63 [JK RS485 component] Fix ._SCHEMA deprecations
• Merged PR 67 Add options to restrict max. charge and discharge current
• Merged PR 72 Add Pylontech RS485 inverter protocol
• Merged PR 74 PYLON RS485 link status, Heartbeat and Requested Force Charge
• Merged PR 75 Round Auto CCL / Auto DCL values
• Merged PR 77 PYLON RS485 prevent stale data on BMS disconnect
• Merged PR 80 BMS Modbus client: Return 0 when not online
• Merged PR 81 Fix balance trigger voltage for Basen and Deye

YamBMS 1.5.7

• Adapted the default min/max values ​​for the Float slider
• Merged PR 53 Add feature Auto Float Voltage
• New dashboard for Auto Float Voltage function
• Defining state_class for all YamBMS sensors
• Set esphome min_version to 2025.6.0
• Fixed: change Charge Status to Bulk when Force Charge is requested
• Merged PR 70 Dashboards compatible with HA 2025.7
• Merged PR 70 Dashboard max/min cell voltage in color using macro
• Removed all special characters in entities name + dashboards correction

YamBMS 1.5.6

• Fixed issue 58 Compilation problem with esphome 2025.5.0
• Fixed issue 55 New CPU frequency option
• Fixed issue 65 JBD Circular dependency error
• Fixed issue 35 BMS Charging Cycles Offset
• Merged PR 51 Support for RP2040 RPi Pico
• Merged PR 56 Add support for Basengreen BMS
• Merged PR 60 Fixes for new ESPHome and add of BMS Cycle Count offset
• Merged PR 61 Set Modbus BMS values to 0 when BMS goes offline
• New board_ESP32-S3_Touch-LCD-4.3.yaml board
• New board_ESP32-S3_Touch-LCD-7.yaml board
• New board_ESP32-S3_YBoard_DJK.yaml board
• New board_RP2040_RPi_Pico.yaml board

YamBMS 1.5.5

• New main.yaml with LP (local packages) and RP (remote packages) versions
• New board.yaml with modular UART/CAN interfaces
• The name of the JK bms.yaml is no longer linked to a specific model
• SoC calculation is now based on remaining capacity for more accuracy (BMS only) issues #39
• SoH calculation is moved to BMS level (for those who do not provide this information)
• Improvement of the Victron SmartShunt doc issues #38

YamBMS 1.5.4

• New low SoC corrected at each BMS level (the corrected SoC is the one transmitted to YamBMS)
• New BMS dashboard
• New end of charge logic at each BMS level, the charge switch turns off when the cells are equalized (disabled by default)
• Fixed errors_bitamsk for JK-PB RS485, test OK with YamBMS (forked component)

YamBMS 1.5.3

• Broadcasting JK-PB settings to all BMS set to OFF by default
• Reorganizing the board folder and YAMLs (device_base.yaml moved to board.yaml)
• device_base.yaml should no longer be part of YamBMS_main.yaml
• New RGB LED status light effects (red, green, blue, cyan) as an options packages for board.yaml
• Increased CPU frequency to 240Mhz as an options packages for board.yaml
• Added ESP32 Generic, LilyGo T-CAN485, LilyGo T-Connect and XIAO boards
• Fixed SoC logic (low SoC will be detected at BMS level and no longer at YamBMS level)
• Simplified combination logic (removal of the combine switch) + dashboard update
• Check Battery Capacity is > 0 before combining info (see issue #14)
• Improved alarm logic with a common YamBMS errors bitmask for all BMS models (see OTP vs UTP bug reported by ChrisG)
• Added PR #7547 regarding publishing entities via the API
• Removed captive_portal because it increases the loop time too much
• PSRAM will no longer be enabled by default as this has a bad impact on BLE BMS

YamBMS 1.5.2

• Added shunt Online Status binary_sensor
• Shunt combine condition based on the new binary_sensor Online Status
• Logger baud_rate: 0 by default (frees the 3rd UART and avoids some bugs like "WK2168 with canbus" or "BLE client with RS485 modbus")
• Changed names of bms and shunt YAMLs for modbus multi-node solution
• Added shared configuration file to simplify main YAML (centralization of parameters)
• Simplification (fewer options) when importing BMS / Shunt YAMLs
• New multi-node solution using RS485 modbus to communicate information to YamBMS
• New board espBerry with 2-CH-CAN HAT

YamBMS 1.5.1

• The conditions for combining BMS and the charging and discharging instructions no longer have any relation with the errors_bitmask sensor, the new system relies on the three binary_sensor online status, charging allowed and discharging allowed being linked to the status of alarms and switches.
• The BMS combination procedure has been completely rewritten.
• Improved structure and ID names of bms.yaml.
• The yambms.yaml and yambms_combine.yaml global variable names have been changed for better code reading.
• Improved code regarding the CAN bus esp_light status for boards without integrated LED.
• New Atom S3R board and Smartshunt BLE shunt.
• New JBD, Seplos V1 V2, JK-B RS485 (display port) and FAKE BMS.
• New YamBMS DEMO YAML and firmware offered to test and discover how YamBMS works.
• New management of temperature sensors (no longer limited to two sensors).
• @Der_Hannes fixed the AtomS3 black screen issue (with esphome > 2024.7.3) and developed new code for display management based on the ili9xxx platform.
• Auto CCL/DCL functions have been fixed to work with JK-PB and new JK-B BMS, see this issue.
• The UVPR and OVPR sensors are no longer used and replaced by UVP and OVP to ensure operation with all BMS.
• @txubelaxu fixed a bug in the JK-PB RS485 component that could cause a false battery voltage value to be sent, see this issue.
• Improved documentation, added a HowTo to create its main YAML, warning about galvanic isolation.

YamBMS 1.4.5

• Changed the way to configure WiFi/Ethernet network
• Added ESP32-C3 ETH01-EVO ethernet board
• Reduction of the number of YAML bms files, UART rx_buffer_size is set to 512 by default for JK-B and JK-PB
• New JK-BMS BLE sensors (last commits of @syssi) and new BLE standard version