MaxAmps 9000mah 7.4v LiPo Pair for Traxxas Summit Two Lipo 9000mah - 7.4v packs, 40+mph in Summit brushless(14.8 volts), 54 minutes average run time(9000mah capacity) True 100C rating, 5C fast charge capable, Lifetime warranty Built today with factory fresh cells, Built with genuine 12awg Deans Ultra wire We add the connectors and balancing taps for you, 100% Waterproof 162mm x 45mm x 25mm, 420g, Fits Traxxas Summit without modification.