Hahnel Charger (Duopal) + Powerbank
Fully compatible with original Hero4 batteries. Charge TWO Hero4 batteries simultaneously HIGH POWER 5200mAh internal power bank provides emergency. Batteries fully charged in just 2.5 hours. Up to 5 hours of recording time. Mini USB to USB cable included. Any USB Adapter or power source can be used with the DuoPal Extra (not included). Also available as a KIT which includes hahnel HL-GP401 battery.