SwellPro FD1 Flight Battery Overview SwellPro Fisherman flight battery is specific designed to fit Fisherman’s internal chamber to maximize Fisherman flight time. It features a 98.8Wh high voltage lithium-polymer battery. Specification Battery type: 4S LiHV Voltage: 15.2 V Capacity: 6500 mAh | 98.8Wh Weight: 630 g In The Box 6500mAh Flight Battery x1 Compatibility SwellPro Fisherman