The Watson Mini Duo Charger for GoPro HERO4 Batteries allows you to simultaneously charge two GoPro AHDBT-401 type batteries from USB power sources. It is equipped with dual battery bays for charging one or two batteries at a time, with each bay featuring an LED indicator that displays charge status. Mini-USB and Micro-USB power inputs are provided, letting you connect the charger to a USB power source using the included Mini-USB cable or a compatible cable you already own.

Key Features
Accepts two AHDBT-401 batteries
Charges one or two batteries at a time
Mini-USB and Micro-USB power inputs
LED charge status indicators for each battery bay
Includes 24" Mini-USB cable
SPECIFICATIONS
Input: 5 V, 2.1 A
Input Connectors: 1 x Mini-USB
1 x Micro-USB
Output: 4.35 V, 0.75 A (for each bay)
USB Cable Length: 24" (61 cm)
Dimensions (WxHxD): 1.75 x 0.75 x 2.25" (4.4 x 1.9 x 5.7 cm)
Weight: 0.9 oz (25.5 g)