Batteries (x2) discharging different rates and temps

i read lots of posts about plant and SOC issues - is this another symptom?

i have HA running 'balance inverters' automation, but doesnt seem to address this

any advice?

ivell I think that each of your batteries is connected to its own hybrid? I’m assuming the hybrids and batteries are the same model. If this is the case then you have the same setup as us. I do monitor SoC but don’t interfere with inverter operation other than changing Charge to %. All I can say is that our battery SoCs were within 1-2% all the time last year. Since December, one battery SoC does seem to fall faster than the other. I’m putting this down to SoC drift and that it would benefit from a calibration but since between them they cover house load continuously. I’ll await the new firmware and see if that realigns the SoCs.

Tim yes correct - hybrids + batteries all same model.
now you point it out, i've only seen this issue over the last few months. I did have an inverter replaced under warranty so put it down to that
let's see if new firmware sorts it