UPDATE:!!

When ordering the FD1 Battery please look on the yellow portion of your plug and make sure which one you need, the XT90, or XT60

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.

Battery type: 4S LiHV
Voltage: 15.2 V
Capacity: 6500 mAh | 98.8Wh
Weight: 630 g

6500mAh Flight Battery x1