Great Planes LiPo 1S 3.7V 250mAh 20C Electrifly Plug in Cell FEATURES: Stock replacement LiPo battery for the Micro P-38 Lightning Charges from the Tactic TTX402 transmitter INCLUDES: 1S 3.7V 250mAh 20C LiPo Battery jxs 08/20/13 ir/jxs