GoPro Max 3 Battery Case

thingiverse

Someone asked me on Reddit if I could modify my two battery box into a 3 battery box, and I decided that the clip system wouldn't work well for a rectangular shape designed to hold three batteries. So I came up with a sliding lid box, which is essentially a friction fit but quite secure. It's probably better to insert the batteries with the contact end facing forward (the blue end) so you don't have to push down the tabs when closing the lid. To ensure a proper fit, test it first with the tab end, just in case the print isn't perfect and they get stuck.