Tenergy 5pcs 3.7V 380mAh LiPO Battery for Hubsan X4 (H107C, H107D), Syma X11 X11C, TDR Spider, Holy Stone F180C HS170 It will give more PUNCH and ROBUST performance due to its higher current output and power. Direct replacement - Compatible with these Hubsan models: Hubsan X4 (H107C-HD), Hubsan X4 (H107C), Hubsan X4 (H107D), Syma X11, Syma X11C, Syma X51, XT Flyer, TDR Spider, WLtoys V252, JXD JXD385, Walkera Super CP, Walkera Mini CP, Walkera Genius CP, Holy Stone F180C, Holy Stone HS170 -- no modification needed! Dimensions (Max.): 40 x 21 x 7.5mm Capacity: 380mAh Voltage: 3.7V