New high capacity Fat Shark battery with LED power indicator has an improved molded shape to securely fit in the head strap pocket. Large, 1800mAh capacity pretty much lets you fly all day. It comes with a balance lead for charging off standard RC type chargers and can simultaneously power the fan equipped face plate.  Includes a Fat Shark branded banana discharge lead adapter for compatibility with all chargers.

Specifications
Voltage: 7.4v
Model: FSV1803
Capacity: 1800mAh (13.3Wh)
Dimensions: 63x19x31mm
Weight:100g
Max Charge Rate: 1C

How to charge videos: https://www.youtube.com/results?search_query=charging+fatshark+battery