Rhino Arc comes with a built in lithium polymer battery that is recyclable. If you're shooting for long periods, you can use an external battery pack to power Arc. If using Arc and charging simultaneously, unplug the cable after 10 hours and plug it back in to continue charging. We recommend a battery pack with at least a 1.5A USB output (2A max).
Here are two compatible options available through Amazon:
The ambient temperature and humidity will affect the operating time. If you use the device at locations with extremely low temperatures, it's operating time will be reduced.