Power up on the go with the black GOAL ZERO Venture 30 Portable Battery Pack. Designed to keep your mobile devices charged in hostile environments, this pack has a built-in 7800mAh, 30Wh battery that delivers its power via a pair of high-speed USB ports. The ports have a combined output of up to 4.8A, enough to charge up to two smartphones, tablets, or accessories at once.
The Venture 30 is IPX6 rated, enabling it to survive rain and even short dunks under water. It charges in as little as five hours via USB and also has a built-in charging tip for connecting to select GOAL ZERO solar chargers. The Venture 30 also comes with an integrated micro-USB cable that can be used to charge the battery itself or micro-USB devices.