Don’t settle for generics with no real warranty or pay crazy prices for expensive original parts. Buy a brand you can trust. Choose UpStart Battery and get a factory warranty and the most trusted name in America for replacement parts. Product Specifications 2x Pack – GoPro AHDBT-401 Battery Chemistry: Lithium-Ion Output Volts: 3.8 V Capacity: 1160 mAh Brand: UpStart Battery Warranty: Lifetime Warranty This Product works in or replaces the following OEM model numbers: GoPro AHDBT-401GoPro AHBBP-401GoPro Hero4GoPro Hero4 BlackGoPro Hero4 Silver