This is a bit annoying. I have a recharger pistol on me just because I am an EW user and currently I am having a hard time keeping my ammo reserves good (seeing as most EWs use multiple rounds per shot). So it's a back-up I have so I can have unlimited ammo.
The problem is, if I let it charge then switch weapons and switch back; the charge has to refill again. It makes no sense :/