hello everyone, i have a problem with the us2000b battery at a certain point the red led came on and by connecting it with batteryview this error "BMIC ERR" comes out does anyone know the cause and know how to fix it?

(the battery does not receive and does not give current)
Thank you in advance

I'm not sure what it means but looking at the cell voltages you have a very wide variation 3.329 - 3.237v and at an overall voltage of 49.023v. They really should all be nearly the same. It's only at higher voltages, near 90- 100% SOC, that they will show differences, but even then, only of something in the region of 0.030v.

Have you been charging to 100% SOC regularly?

Can you download the log files and post?

BMIC- Battery Management IC

EDIT just found this in another Pylotech manual that may give a hint.

 

Edited July 19, 20232 yr by Tinbum

yes i can share the log file, but i don't understand the manual

the battery in this moment have the red led on, and is not possible to charge at 100%, the inverter (sofar me3000) don't do nothing

 

PPTBH02199309823_event_20230719232959.txt

It won't, it looks as if the BMS is faulty.