This is the perfect battery for your goggles or radio! It fits radios such as Radiomaster and can power most FPV goggles
 
Directly compatible with the stock battery with more capacity, all normal radio charging and functionality remains exactly the same.
 
Charge voltage: 4.2V/cell / 8.4V pack
Discharge voltage: 2.55V/cell / 4.1V pack (careful as some systems may shut off sooner than 4.1V)
Discharge current: 10A constant
Discharge power: 72W
Power connector: XT30
Balance connector: JST-XH-3P
Weight: 146 grams
Dimensions: 7.8cm long x 4.3cm wide x 73mm tall