999zip999
100 TW
Do not walk away. The little will charger hit 4.15v and race to 4.2v and above fast. So keep an eye on it. Never over charge.
mcristiani said:Why would the single group not charge? New board since the original problem.
Since I'm not sure if you're reading the right post, or all of the post pointed to, I've quoted it below with the key word highlighted.mcristiani said:That post is saying a bad BMS. But I already installed a new bms, so I just have a hard time believing this is also broken.
amberwolf said:could also be a bad batch of bmses, where that channel has a wrong part or problem with traces, or a part installed in a wrong position, etc.
That you may be able to visually check by comparing channels between the wroking ones and the problematic one. A multimeter can also be used if no visual differences exist.
If welds break, then there are twisting stresses on the pack itself that are moving cells around.mcristiani said:I keep getting welds popping off and then batteries out of sync and then dead groups again. I just don't get it.
mcristiani said:Question: If group1 is 4.11v and the group2 is 4.13v do I need to make exactly 4.13v connecting?