GoPro Hero 9 Battery Charging Door

Update 2: Added a version that has a cold shoe as well as a charging port.

Update: Added a version that lets you access the SD slot. It helps if your SD card is one with the little fingernail bump on the end, some have it, some don't. Otherwise a small piece of tape attached to the card to give a pull strip makes it easier to take out.

I needed a battery door with a hole for my GP9 so I made one. I took this one for the GP8 and used it as a base for one that works for the GP9.

https://www.thingiverse.com/thing:4243869

It works well enough for me. There's a finger slot on the bottom and it sticks out a bit so it's easy to take off. It snaps pretty securely into place. The usb hole is appropriately sized to hold the original USB cable that comes with the GP9, if you have a cable with a larger plug you might have to sand it a bit to make it bigger.

Supports aren't super critical but if your printer doesn't do bridging well then add supports for the charging hole. It's not a long span.

To put it on, hook the door in the top part and just press down. To take it off put your finger nail in the slot that sticks out on the bottom and pull up and it pops off. Easy.