I ended up scrapping the huge LED array in favor of something a bit closer to the original stun prod from Signalis. I should be able to get by with only 3 LEDs for the “charge” indicator and a single LED to indicate empty (blinking red?) and recharging (amber?).

This is a bit reminiscent of a cheap Russian dosimeter I bought a few years back, it fits the vibe. Scratched up the painted details, to give it a bit more character.

I also made the instructions face the user, while the warning label faces towards the “enemy” 😛