18650 Slim single box mod

This is new version of single box mod.
Parts needed:
https://www.fasttech.com/products/0/10011690/2013501-diy-spring-loaded-firing-button-for-mechanical-mod
-https://www.fasttech.com/products/0/10011689/3441401-510-connector-w-solder-ring-terminal-for-e
-cheap chinese voltmeter (check dimensions my is 11x23mm)
5x5x2mm magnets
-5mm tact switch for switching woltmeter
-3mm neodymium magnets are optional because in my case battery closing part is holded by friction (it depends of your printer accuracy)
Contacts for battery are made from brass sheet, bent and hot glued at the bottom.

Fusion 360 files : http://a360.co/2gWuCEq