New GoPro Dual Battery Charger w/ Battery for HERO7/6/5 Black & HERO 2018 | eBay
Kastar 4-Pack GoproMax Battery and AC Wall Charger Replacement for GoPro Max SPCC1B, ACDBD-001 ACBAT-001 ACCBAT-001, CHDHZ-201 Battery, GoPro MAX 360 Waterproof Degree 5.6K Action Camera - Walmart.com
GoPro dual battery charger full unboxing, overview and instructions - YouTube