GoPro Replacement battery for Hero 5 / 6 / 7
Power supply, Hero 7, hero 5, Hero 6
GoPro Replacement battery for Hero 5 / 6 / 7
Power supply, Hero 7, hero 5, Hero 6
Not necessarily. You can also simply charge the battery in the GoPro as usual.
Otherwise, you can also use the following external battery charger: GoPro Charger for 2 Batteries for Hero 5 / Hero 6 Black (Charger, Battery)
Alternative with 2 spare batteries
Yes, it can, but certain functions are limited and can only be fully used with the newer batteries.
Yes they also work with the 8. However, there are a few restrictions on the functions. The camera indicates this when the "old" batteries are inserted.