Or have plenty of material for editing.

http://adventureflying.at/product/leading-edge-gopro-mount-battery/

Give your photography a new spin! Our hang gliding GoPro 3/3+/4
mount was designed not only to hold the camera but also to charge it during the
flight. So now even a really long Adventurous flight won't stay without a
landing shot! Additional Lithium battery has 3500 mA capacity. Even in cold
conditions, it will make the GoPro working for at least 5 hours with switched on
WiFi and 7 hours with WiFi turned off.