Yuneec 5200mAh 1S LiPo Battery for ST10 Personal Ground Station YUNST10100 Compatibility: for ST10 Specification: Capacity: 5200 mAh 18.7 Wh Chemistry: Lithium-polymer (LiPo) Voltage: 1S (3.6 VDC) Feature: The 5200mAh 1S LiPo Battery for ST10 Personal Ground Station from Yuneec can serve as a spare or replacement. It is designed to charge from the USB charger included with the ST10.