June 29, 20214 yr I am looking for information on how to query a Freedom Lite battery State-of-Charge and other data. My ultimate goal is to publish data from batteries and inverters via MQTT so that other devices can be switched on and off dependant on their priority and available power. The current setup is a MCP2515 and NodeMCU.
June 30, 20214 yr Author I've read somewhere that the battery uses the OrionBMS, however using their document and polling for the data does not result in anything. https://www.orionbms.com/general/retrieving-data-obd2-canbus/ Unfortunately it does not respond on their sample request.
July 14, 20214 yr Author Just got my first version working getting the SOC and some other information from a Freedom Won Lite battery on it's CAN bus.🥳 The hardware units are an ESP8266 and a MCP2515 CAN controller. Edited July 14, 20214 yr by Bezuidenhout
November 1, 20223 yr On 2022/10/11 at 6:03 AM, ridwan said: Hi. Can you perhaps share what u did to interface with the batteries. My best guess: Esphome has a can-bus integration plugin, so esp8266 with MCP2515 module and the yaml that you can find in the documentation https://esphome.io/components/canbus.html Edited November 1, 20223 yr by iiznh
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