Other Parts Discussed in Thread: BQ76930, , BQSTUDIO
Hello, I have a few groups of 72v40ah lithium battery pack on hand, samsung batteries, battery protection board is maed by ourselves, BQ76930 + BQ34Z100-G1.
BQ34Z100-G1 had been configurated parameters, self learning success;Now we found a strange thing, when pack discharge at 10A, 15A, 20A(constant current), the whole process of discharge from 100% to 0,SOC is very accurate. But when discharge at 24A, 30A, 36A(constant current), SOC from 100% ~ 90% is very accurate, but after less than 90%, it drops very fast. Please help to see what's the problem. below is schematic FYI. Thanks.