I have a couple of bad batteries (2S Turnigy Nanotech Hardcase). When I attempt to balance charge with my Traxxas charger they cancel the charge cycle after a few minutes and say “full” or “cell err”. I did a little investigating and noticed that when I attempt to charge the bad packs the charger cannot settle on what the voltage is of the pack so it cancels. Sounds like a loose connection. I found this video and figured I might try this and see if I can locate the problem.
Anyone have any experience dissecting LIPO’s? Video is a bit slow but gives me a good idea how to safely open and inspect. Maybe I can find a bad/loose solder joint?