Costco Heated Gloves - Fire Risk Repair!!

This repair is not recommended unless you are familiar with building electronics. Lithium Ion batteries like these can be very dangerous and catch on fire if exposed to high heat or damaged. Please recycle all used/exhausted lithium-ion batteries appropriately. They should not be just tossed in the trash. Thank you!
1. This video lists a basic debugging technique - parts swapping.
2. It also shows two failure modes with these glove batteries - wire damage and a broken wire that should have originally had strain relief.
3. It also shows electronic soldering and using shrink wrap to fix damaged wires and a broken wire that was re-attached its solder pad.