18650 screw-on enclosure (duo & single)

thingiverse

Enclosure for 18650 batteries that is incredibly secure - simply screw it on. Compatible with both protected and unprotected 18650 batteries. Using this enclosure couldn't be easier, you just need a wire - no springs required. The full version of the enclosure is straightforward to print, but if you're up for the challenge, try printing the spring version instead. If you manage to print the spring version, we'd love to see your results - it's also fun to watch the spring version print.