A <1 year old $80 lipo car jump starter pack crapped out on me. It worked great for a while, but then stopped accepting a charge. I ripped it apart and found that the individual cells in the lipo pack were wildly out of balance. I hooked each cell up individually to a power supply and manually balanced the back. Now it seems to be charging on its own. Time will tell whether it’s a save or a temporary solution. Note: ripping open lipo packs can be dangerous, have a care if you try this.
