Ok. I'm guessing then that you have watched a number of the Youtube videos from the likes of JehuGarcia, The Australian Powerwall guy(can't remember his name right now), and others. You really need to get a charger that will test the internal resistance even if the battery capacities are pretty well matched. When those guys have had their fires, that is often where the fault was found. Higher resistance = more heat = fire eventuallyt.
JJ
|