Amazon.com : Compatible Cable for Go Pro USB Cable/Battery Charger for Go Pro - HD HERO2,HD Hero 3D, Hero 3 / Hero 3 Plus/Black Edition/Black Surf/Silver/White Editions, HD Hero 960 by Master
Amazon.com : GoPro Dual Battery Charger for HERO3+/HERO3) (GoPro Official Accessory) : Camcorders : Electronics
TELESIN 3-Channel USB Battery Quick Charger with Type-C Cord for GoPro Hero 9 Black - CameraLK
GoPro Hero3 Teardown - iFixit
USB GoPro Hero 3 Compatible Digital Camera Battery Charger - Mr Positive NZ