Power your HERO camera for even longer – take along a GoPro Battery Bacpac. Unit seamlessly attaches to the back of the HERO3, HERO3+ and HD HERO2 cameras for extended battery life. LCD window indicates camera's battery level and charging status. LED light displays camera's recording status. Charges using most USB chargers, GoPro Auto or Wall Charger, or plug it in to your computer. Includes USB cable, protective case, standard and skeleton backdoors.