Evolv DNA40 Box Mod - Box Battery

A simple box mod (box battery) to use with the Evolv DNA25 or DNA40.
U need:
- a drip cup (in my sample i used a Svapiamo "easy flat 22 mm" drip cap;
- negative spring;
- positive contact;
- magnets 3x1 and 2x1;
- DNA40 from Evolv;
- some cable.
I attach some variant of body with different drip cap holes and with or without bottom air hole and 3 longs of buttons.

A video about this box (italian):
https://www.youtube.com/watch?v=VbbTIknPH04