MaxAmps LiPo 5450 3-cell 11.1v Battery for 3DR Iris Quadcopter 70+mph in most brushless setups(11.1 volts), True 120C 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 137mm x 45mm x 27mm, 354g