Battery Storage Vials

thingiverse

This vial stores either two non-rechargeable CR123a batteries or one rechargeable Fenix 18650 battery. As of October 18th, it also accommodates MecArmy U18-34 18650 batteries, with chamfers added to the threads' top and bottom. To use the vial, download and print the "18650 v3 Assy.stl" file. Initially, screw threads may feel stiff; loosening and tightening the cap will smooth them. A recent update includes 18650 tube.stl and 18650 cap.stl. An optional rubber O-ring (20.3mm ID, 2.4mm width) can be used, although note that the vial may not be completely watertight despite a 100% fill print.