18650 single cell battery case

A simple 18650 single cell battery case with or w/o a knurling and a lanyard hole at the bottom.Did you want to take batteries with you, but didn't want to throw them loose in your backpack? Are you afraid of damaging them mechanically or getting them wet? Now you can just print one of these and stop worrying. Easy to open and close, rigid, and well designed. The inner diameter is 18.9 mm, which shrinks after printing so that your cell (in its sleeve) is easy to remove but doesn't fly around inside. The circular thread ensures smooth unscrewing (especially with lower layer heights). You can choose whether you need the knurled version (easier to unscrew, but the non-knurled version is just as easy). Additionally, you can choose a version with a lanyard hole if you want to attach the case to something.