I show how to diagnose battery issues in this video and where to get the parts. I left out some steps that would needed to be taken had there been other problems but that was the problem with this particular battery I guess I'll have to wait for a pack that has bad cells to show how to isolate them and replace.very true, I left out allot of things on this particular diagnosis as my videos aren't rehearsed, I do them real time on the fly and try to speak off the top of my head about what I'm actually doing at the time. I had no idea what this packs problem was gonna be as I really thought it might of had some bad cells possibly and wanted to show how to isolate them but so happens it was the bms as you saw. wasn't too much I could show after discovering that and I didn't have one for a 48v on hand so I ended it there. I should have stated there's allot more to be learned in a battery diagnosis and I thought about allot after I got off camera so hopefully I get more batteries to work on if not I'll try to do a hypothetical dissection and pre plan it to cover everything.