Electric_Blue
New Member
- Joined
- Nov 16, 2022
- Messages
- 17
Due to some previous inverter issues, I wasn't able to use closed-loop comms with my eight EG4-LL batteries. I purchased Solar Assistant and connected my battery's BMS outputs to it alongside my inverter outputs. What an amazing amount of insight this locally connected system gave me! I could see ALL of the diagnostic health data for each battery in real-time and push that over to Home Assistant (MQTT) to run automation based on cell temp and SoC.
Fast forward. Now I am in closed-loop comm with my new inverter and I get Soc, power, current, voltage, and temp as aggregated averaged values. No per battery values, no cell values, no SoH.
Is this a limit of the BMS hardware, it doesn't output or respond to queries when daisy changed together to a "Master" ID1 battery? Does anyone know if this data is being broadcast up the RS485 channel to the inverter and just being thrown away? I saw a little hub device EG4 makes for the "Lifepower 4" series that records all this data for itself and then talks business to the inverter which is what got me thinking about this concept but forking that data to an RS485/RS232 output that could be read......
Anyone tinkered with anything like this?
Fast forward. Now I am in closed-loop comm with my new inverter and I get Soc, power, current, voltage, and temp as aggregated averaged values. No per battery values, no cell values, no SoH.
Is this a limit of the BMS hardware, it doesn't output or respond to queries when daisy changed together to a "Master" ID1 battery? Does anyone know if this data is being broadcast up the RS485 channel to the inverter and just being thrown away? I saw a little hub device EG4 makes for the "Lifepower 4" series that records all this data for itself and then talks business to the inverter which is what got me thinking about this concept but forking that data to an RS485/RS232 output that could be read......
Anyone tinkered with anything like this?
