onemorejoltwarden
100 W
I acquired a Bafangusadirect 52/17.5 shark pack of uncertain heritage that wouldn't charge to see if there was something that could be done with it. 49.4 v across output with out load, zero with. BMS has a burned Mosfet , maybe2 and cells appear good.
It appears that both the P or B terminals have big solder blobs that may have arced to the first mosfet or shorted out a trace, I suspect the adjacent P.
What are good sources for 14S BMS? The original is labeled a 2019-05-06SP-M14-020-A02 30A
I contacted Bafangusadirect, who did not have the in stock.
If BMS are pretty much generic, are there brands or sources to avoid?
If the suspected short was not the culprit, any good troubleshooting resources for things that could do this?
It appears that both the P or B terminals have big solder blobs that may have arced to the first mosfet or shorted out a trace, I suspect the adjacent P.
What are good sources for 14S BMS? The original is labeled a 2019-05-06SP-M14-020-A02 30A
I contacted Bafangusadirect, who did not have the in stock.
If BMS are pretty much generic, are there brands or sources to avoid?
If the suspected short was not the culprit, any good troubleshooting resources for things that could do this?