SOONSUN Aluminum Side Door Cover for GoPro Hero 8 Black Removable Replacement Battery Door Cover with Type-C Port for GoPro Hero8 Black, Charging Without Removing Battery Door

Good quality.

Vital if you want to add the microphone adaptor or even the charging / power lead to the Hero 8 Black whilst in use - unlike the foregoing Hero 7, keeping the standard door open in order to be able to have a lead plugged in, is not an option on the 8, as it needs to remain closed to hold the battery in! I never liked how the sockets were exposed on the 7 anyway, where the door had to be left open (and flap about in the wind) or removed, if an external lead was required, but this does seem a much better arrangement. It works the same as the original door but with just a small aperture to plug in an external lead. Not waterproof in the context of being submerged, but should be shower proof and keep out most dust and dirt - or at least more so than the Hero 7's arrangement. Material is aluminium or alloy (as per the original), and appears to be well made.

So, obviously if you are buying a battery door with a large hole in it, you are compromising the waterproofing of your GoPro. I have supplied comparison pictures to show the original and replacement side by side. Note there is no attempt to seal the door at all, but it does fit well. I will use this in dry weather only, BUT I live in England and unexpected showers will happen. So, I have shown my USB C lead fitted through this door, with an ADDITIONAL Nitrile Rubber O Ring that I purchased separately (10*1.9 size). It will not be waterproof, but I would hope that it stops a small rain shower from quickly invading the battery compartment. My plan is to stop riding and put the GoPro away if there is persistent rainfall. Anyway, I used the GoPro for 2 hours from a power pack yesterday with this set up, and came home with 100% battery, so I am happy.

Something GoPro themselves should have produce. Used it for a 100km bike ride, give access to USB C port so I can attach power bank to keep it going.Build quality is 99.5 %, the 0.05% is me nip picking the one flaw (Corner is not flushed with the GoPro unit).

Very well packaged, fits my hero 8 black as it should. Will now allow me to use a power bank rather than faffing with multiple batteries.

This is not compatible with the GoPro 8. The lid will not close. Misleading description.

Fits well and does the job perfectly