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 print