Cheerwing 5 pcs 3.7V 650mAh Lipo Battery for Syma X5SW X5C X5C-1 X5 RC Quadcopter Drone - Ship from USA Upgraded syma quodcopter high currency 650mAh battery, more safety and higher performance for your quad copter,Enjoy more flight time Battery Size: 4 x 2.4 x 0.9 cm Fits: Syma X5SW, X5C-1, X5C, X5 Package Includes: 5 pcs x 3.7V 650mAh Batteries Kindly Remind: This 650mAh battery will be little big for Syma X5C-1 and X5C, but it also can be installed.