3 x 7.4V 10C 2700mAh Battery & Charger Set for Hubsan H501S X4 RC Quadcopter   Description: Brand Name: Hubsan Item No.: H501S-002 Item Name: Battery Voltage: 7.4V Capacity: 2700mAh  Power:10C  Weight: about 432g Dimension:10.4*3.35*1.6cm Usage: for Hubsan H501S X4 RC Quadcopter   Package Included: 3 x Battery 1 x Balance Charger 1 x Charging Cable