Powerextra 2 Pack Replacement Batteries and Travel Quick Dual Battery Charger for GoPro HERO3, AHDBT-201, AHDBT-301, AHDBT-302 with Power Bank Function for iPhone, iPod, and Other USB Devices Package includes 1 X 5200mAh dual charger, 2 X 1100mAh replacement Gopro hero3 battery, 1 X micro USB cable. Perfect external charging station for GoPro HERO3+ /HERO3, GoPro AHDBT-201 AHDBT-301 AHDBT-302, no cable needed to charge 2 batteries at the same time when outside,solving the low power problem for your digital device while on-the-go. Simultaneously Charge: While charging your GoPro batteries, the USB output can still be used to charge your other mobile device. Constructed with premium LG battery cells, ensures safety use and long lifespan, built-in LED light indicate the status of charging, multi-charge capability makes charging easy and convenient. Quick Charge: Battery charging port - 600mA (each port), charge your batteries in 2 hours; USB port - auto detect the current needed of your device and deliver its fastest possible charging speed up to 2.1A.