Kastar LTD2 USB Battery Charger Replacement for Gopro AHDBT-401, AHBBP-401 Action Sport Camera, HERO4 Black, Hero 4 HD Black, HERO4 Silver, Hero 4 HD Silver Action Sport Camera - Walmart.com
Amazon.com : Smatree Battery (3 Pack) and 3-Channel Charger Compatible for Gopro Hero 4 (NOT for Hero 5) : Electronics
PRO-mounts – Battery Kit – for all GoPro Hero4 Camera's | Image One Camera and Video
GoPro Dual Battery Charger and Battery for HERO4 - AHBBP-401 - Walmart.com
GoPro Dual Battery Charger + Battery Accessory charger and spare battery for GoPro HERO4 camera at Crutchfield