The latest AM-700995 is especially designed to change the Sanwa M17 original battery pack which gives over double ability of initial. Using this new battery pack there's no stress of low in energy of one's transimitter. Ability: 3.7V 6000mAh Connector: JR Style with dense 20AWG Silicone Wire / 60mm Size: 78mm(L) x 47mm(W) x 12mm(T)