I've "force charged" li-ion batteries. Reverse engineer the pins of the battery, one is a resister temp meter connected to + or to ground. Other pins are + and -. Use a 9v alkaline battery battery to charge the lion battery, + to +, - to -. A 9v battery is self-current limiting by its very nature. It limits automatically the watts/amps, even at 0.05v of the lithium battery, to never heat up the li bat to dangerous temperatures. You can remove the 9v bat every 60 seconds, and check with a volt meter the li bat increased in voltage after 60 seconds of charging. It will take 10-30 mins to get the