The GoPro Dual Battery Charger for HERO9 / HERO10 / HERO11 Black is a dual-charging solution for GoPro HERO9 / HERO10 / HERO11 Batteries that power GoPro HERO9, HERO10, and HERO11 Black cameras. It will sequentially charge two 1720 mAH lithium-ion batteries to full capacity in ~10 hours with a 1.0 amp USB power source. To cut charge time by 38% add a GoPro Supercharger to your order as well.