oldman

hey morning did you ever figured out what the problem was on the bms boards? now kobalt, greenworks and briggs & stratton are basicly the same. i'm working on a kobalt 80v and i swap a good bms with what i thought was a bad bms turned out the bms wasn't the problem. its the back board which connects to your tool or charger. i think i found the problem in the TVS3 # PK708K NYK. not getting any reading on the multimeter either way. i made sure the solder connection were cut and resoldered and still nothing. i will try to replaced it but hard to do with 1 half-axx hand and the other blowing in the wind. in other words disabled. i hope i'm right. we'll see in about a month from now.

Did anyone reply with the remedy? I have similar issue with kobalt 80v batteries all same they all look good charged up to 80volts put into tool and starts 1 second then dies. I think its in the main chip not letting it discharge. Let me know please