This Spektrum 2-cell 7.4 volt LiPo has a 350mAh capacity and 30C C-rating. Can be charged a maximum 5C charge rate of 1.75 amps. Prewired with a PH 2.0 high-current ultra micro plug and a JST-XH balance connector. Battery pack dimensions are 0.5 x 1.12 x 2.19 in. (13x28x56mm) and weighs 0.85 oz. (24g).