SHARKK 2 Pack Spare Battery for Go Pro Hero 4 Gopro 4 AHDBT-401 AHBBP-401 High Capacity Batteries Always keep the Go Pro cameras rolling by carrying 2 spare batteries Includes two 3.7V 1050mAh Batteries Can be easily recharged inside the camera, or outside the camera Compatible with Go Pro HERO 4 cameras. 1 Year Manaufactur Warranty included with purchase