A:AnswerThe HERO9 Black batteries are a different size and have different specs than the previous batteries. They will not work with the HERO8 Black or other GoPro cameras.
A:AnswerThis device charges through USB-C and requires a power brick to plug into a wall outlet. The ones that come with most smartphones are also USB-C so you can use that if you have one. If not, one will need to be purchased separately.