5200mAh 3S 11.1V 50C LiPo Battery with XT90 Connector from PowerHobby - PHB3S520050C
Designed for guys who want to push their brushless 1/10 & 1/8 scale vehicles to the limit, this 3S battery lets you take full advantage of your power system. Features a huge capacity for extended runtimes, and a 50C rating for lots of power. Competitively priced, this lipo is a great combination of features and value.