Hello. I was using AC200PL+B300 until recently, and their states were always in sync: Parallel+Charge or Paralled+Discharge, on both othem simultanously, even when drain was small, 100W, still both were Discharged.
I have added B300K, now all 3 shown as Parallel, and when charging, all 3 are Charged, but when dischaging, only 2 are Discharge, while 1 is on Stanby. The unit that on Standby sometimes changes, but it is usually new B300K.
Is this exepected? Should only 2 of 3 be discharged simultanously, ot is it indicating an issue?
I’ve checked it for some time, and sometimes all 3 discharge simultanously, usually when the load is high (~2000W).
When the load is upto 500W, only 2 of 3 (station itself, B300, B300K) are discharged while 3rd is on Standby, but then they interchange, and different one is on standby.
It seems to try to have SOC gap less than 10%. Now they are almost fully discharged and values are (1%, 3%, 1%) and all 3 are Discharging.
I was just worried something is wrong with connection or new battery itself, but it seems there is no practical issue, as I get expected amount of energy, just cannot control which battery will be drained faster.
Please confirm if this is expected and some internal logic can indeed stop one of the batteries discharge for some time, or is it something bad/not planned.
Hi @snmya, Thank you for providing the data, it seems you’ve made very accurate and objective observations.
Yes, our battery management system works hard to maintain dynamic balance in the SOC. However, perfect balance is not possible. A discrepancy of up to 10% is within an acceptable range.
We believe this is a normal phenomenon. In fact, the B300 and B300K have different capacities, and maintaining balance between them is quite challenging. We believe their performance is already very good under the circumstances.
