AHDBT-401 Battery £ºHigh quality and advanced technology. And it's safe enough because of PCM Intelligent battery protection circuit.Adopting the SMT lead-free technology just accord with the idea of protecting the environment. Best Replacement for your Grpro 4 camera battery.Specifications:Battery Type: Li-ionCapacity: 1600mAh、 4.4WhVoltage: 3.8VColor: BlackFor Gopro AHDBT-401Use As a Spare or Replacement BatteryUSB Dual port Charger:Built-in Smart Fast Charging MCU 、Over-voltage Protection、Over-charging Protection 、Short-circuit Protection circuit. The Dual-charging-slot can are super fast to charge 2 gopro batteries so that keep enough power and energy for your GoproFeatures:- 100% brand new and high quality、 Dual charging- Complete charging solution for Gopro Hero 4 battery- Perfect for both home and travel use- Compatible with original manufacturer equipments and chargers.- Quick charge with automatic constant current control prevents battery from overcharging、 short circuit、 and electronic shockSPEC:- Input:5V / 2A- Output: 4.35V 800mA ( x 2)- Charging for: AHDBT401Package contents:2 x Gopro hero 4 Battery1 x USB Dual port Charger