I have eight 270amp lifepo4s wired in series and parallel giving 540Ah at 12V. I have set my 120Amp JBD BMS to 80% giving me 432Ah. I have charged the batteries to 432 Ah, disconnected ALL devices and left overnight to rest. I do NOT have an inverter installed as I do not use any heavy accessories. I have disconnected the solar panels. I checked the batteries 24 hours later and they still displayed 432Ah, all well so far. The batteries had a balance of .003, and still do.
I then noticed that in the system it was showing, with a red triangle, an incorrect low temp setting. I reset the temp as the JBD app instructs but then noticed that the 432Ah was now suddenly showing just 302Ah a SUDDEN loss of over 100Ah. I am unsure of what to try next as I have been having this problem for about 4 months when pressing Reset Capacity, however this is the first time I have charged to 432Ah and it has given the biggest SUDDEN drop.
I am considering splitting the battery, make 2 12v 270Amp top balance, and then recharge. I do have a spare 60amp BMS which I can also try as well.
Could this be a faulty BMS controller? your thoughts would be appreciated.
I then noticed that in the system it was showing, with a red triangle, an incorrect low temp setting. I reset the temp as the JBD app instructs but then noticed that the 432Ah was now suddenly showing just 302Ah a SUDDEN loss of over 100Ah. I am unsure of what to try next as I have been having this problem for about 4 months when pressing Reset Capacity, however this is the first time I have charged to 432Ah and it has given the biggest SUDDEN drop.
I am considering splitting the battery, make 2 12v 270Amp top balance, and then recharge. I do have a spare 60amp BMS which I can also try as well.
Could this be a faulty BMS controller? your thoughts would be appreciated.