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I'm not sure you could see anything. It is tightly packed with tape to prevent shorts. If it helps, I had another pack just like this and went to replace the #1 cell and shorted out the pack which is why all the cells are new. This pack has larger wire to see if that was the problem. I'm not...

Once I bring that cell up to approx level of other cells so the charger won't give me an error, they all charge fine and are balanced. The cells were new and capacity tested. All cells were capacity matched. Thanks for the feedback

I created a simple power source a motor and it is disproportionately drawing more current from the 1st battery in the series. I charge/balance the pack with an external charger so when I begin use all the batteries are happy at 3.5v each. After use, the 1st cell is over-discharged and I have to...

Newcomer looking to learn more about DIY solar and LFP batteries... Talk to you soon, Roy