Shocking Mace (Patreon)

This copper-flanged weapon packs quite a punch once you activate it.

I originally created this for my Neverwinter Nights persistent server, and it was coded so that PCs could decide to smack things extra hard with the lightning damage, or not quite so hard by keeping it deactivated. D&D players might want to hold back from using the charged form if they want to capture something alive.