2 Rechargeable Replacement Battery Pack and Charger for GoPro HERO4 Black Edition. Silver Edition HERO4 and GoPro AHDBT-401, AHBBP-401 3.7V 1600mAh This PHOTO4LESS Kit Includes 2x batteries and 1 charger For your GoPro HERO4 Black Silver battery features Digital Battery 3.7V, 1600mAh charger features a fold-out US plug, 110-240V worldwide input voltage, car charger adapter, and European plug Maximum Power, Extended Run Time Latest Lithium-lon Technology Two Years Warranty