Kans Power Battery (2-Pack) and Dual Charger for GoPro HERO4 and GoPro AHDBT-401, AHBBP-401 Get extra power for your GoPro HERO4 camera Charge two HERO4 batteries at once; Batteries each rated at 1160mAh Premium Grade A cells for longer battery life with no memory effect Compatible with the HERO4 Black(NOT FOR HERO4 Silver models);Kans Power charger works with GoPro batteries; GoPro charger and camera can charge Kans Power batteries Includes Dual charger and two batteries with Kans Power 12 Months manufacturer warranty