18650 Case

Requires 4x M3x16mm screws and heat threaded inserts.

https://cnckitchen.store/de/products/gewindeeinsatz-threaded-insert-m3-standard-100-stk-pcs

Print two copies, drill out the thin layer in the screw holes, and bolt together. 

Great for taking on trips! Keeps your batteries safe and secure while giving you easy access with a click lock design.

Remix of:

18650 Queue Case/Carrier by egenjohn - Thingiverse

4X 18650 battery holder case by NickyP - Thingiverse