There are a lot of battery packs available, however, don't be fooled by cheaper alternatives. Note: UpBlink and Blink X requires an external power source and cannot be powered directly from the GoPro battery. Our 47Wh battery increases the GoPro battery life by approximately 12x and has the Always On operating mode required for use with our UpBlink, BlinkX and Blink controllers. However, while Blink can extend the length of time the GoPro cameras can be deployed on the internal GoPro battery, the total amount of time the camera can remain powered on is still the same. Our UpBlink, BlinkX and Blink controllers can be programmed to turn the camera off between shots to only have the camera powered on when the footage is needed. Under normal circumstances, the standard GoPro battery will last for one to two hours of shooting. The USB Battery Pack has the critical 'Always On' operating mode that is required for long-term deployment using our UpBlink, BlinkX and Blink controllers. Our V50 / 47Watt-Hour Lithium Polymer battery features two 5V USB output ports: both rated at 2A with a combined total of 3A available.