18650 Battery Case with latch

Thx mr. Hydraulix for good design, but cap doesn't have any fixation methods, that's unacceptable for me and I made some changes.
I added small rim on the case and remade cap. Also I scaled up case for 1% for better battery fitting. No real photos attached (I printed from transparent PLA and changes does not looks good for camera), but latch works very well - cap holds tight and opens easy but doesn't have a chance to open itself!