18650 holder

thingiverse

This is a holder for 18650 with a tight fit. You will need a set of contacts with a spring that is widely used. There are two versions - with normal (ver0) and tight fixation. In the normal version, to remove the battery, simply pull it up. In this version, the battery may pop up on impact. In the enhanced version, to remove the battery, push it in the direction of the negative contact and then pull it up.