GoPro Rechargeable Battery Compatible for HERO4 Black/HERO4 Silver ( GoPro Official Accessory) - Walmart.com
Amazon.com: GoPro 2 Genuine Original Rechargeable Battery Pack for HERO4 and GoPro HERO4 Dual Battery Charger for GoPro HD Hero 4 Black Silver AHBBP-401 AHDBT-401 : Electronics