Insta360 X3 battery cap

I wanted a minimal battery cap, but couldn't find one. I found one case I could whittle down (in Tinkercad) to what I wanted, but it was too loose. I made it tighter. This fits perfectly tight on my original battery and a non-original. So the only thing that's left of the original model is the inside hole where one battery fits, and even that's been shrunk. So this is just the bit around the battery from the original case, with a little ledge around each end to make it easier to pull off. There is something similar to a layer shift on one side, but might just be an artifact from cutting and pasting. It works fine.