COMPATIBILITY - Replacement AHDBT-901 batteries exactly same as original specification, fully compatible with your Hero 9 Black.
HIGHER CAPACITY - 1720mAh high-capacity provide more power for your camera, they can be charged by original charger.
MULTIPLE PROTECTION - Built-in six layers of protection (against short-circuit, over-charge, over-voltage, over-current , high-temperature and electronic shock), adequate protection for you and your equipment.
PACKAGE - 2 Replaceable Batteries for Gopro Hero 9.