Hahnel Power Kit for Go Pro Hero 4 Fully compatible with Go Pro Hero 4* Black & Silver Cameras & Batteries
Includes:: HL-GP401 for Go Pro AHDBT-401 Charges two HL-GP401 / AHDBT-401 batteries simultaneously Powered from practically any USB (Universal Serial Bus) device via the Mini USB (Universal Serial Bus) / Micro USB (Universal Serial Bus) input Fully charge 1 x battery in 3 hours Fully charge 2 x batteries simultaneously in 3 hours