21700 Battery Holder

A new member to my battery holder family. This 21700 battery holder is a print-in-place design that requires no additional metal planes or springs. Simply insert the wires directly into the holder and you're done. Two version is created for single and dual batteries. You can also download the holder for other sizes (21700, 18650, 15400, AA, AAA) from below:https://makerworld.com/en/collections/18942060-battery-holders Changelog 2026-02-16 *** New Model and Improvement ***- The spring's flexibility has been improved, resulting in better performance when used with PLA.- The cable holes have been redesigned with a horizontal arrangement and a wider diameter. This allows you to use thicker cables for higher current.- New battery holders for 3 and 4 batteries have been added. Eight versions are now available, supporting single to four batteries. Cable management is optional.