01-11-2012, 11:26 PM
Has anyone thought about using a small 2S LiPo battery pack for rebuilding an 82120A? A quick search found a small 120 mAh 7.4V pack (E-flite EFLB1202S20) that should fit with room to spare (30mm x 20mm x 9mm). It would need 3 diodes inline to drop the voltage to the calculator, and it looks like the standard LiPo charging connector might fit in the recharger connection opening.