Just wondering ... I have a Zoom G1ON and a Blackstar Fly. Together they require 10 AA batteries. The G1ON I can power also through my computer's USB connector, but it seems a little weak on some settings, or a regular adapter. The Fly only through batteries as I don't want to pay extra for that propietary adapter. I've been trying to use my rechargable batteries but I seem to have a problem with either the batteries being old or the chargers being finicky. I do have an old Everready charger that seems to work but takes a looooong time to charge a battery. I also have a Rayovac charger, but it has no indicator to tell me when the batteries are fully charged. It just lights up blue and then shuts off after 12 hours. I even have an old Renewal charger ... but I think it is only for my Renewal batteries which are old. Very, very old. So I wonder what you folks do? Of course rechargeable batteries at best are generally at 1.2 volts while the standard AA alkaline is supposed to offer 1.5 volts, but I've found that it's a lot less. And I wonder how my G1ON and Fly really work their best with rechargeables. Anyway, what do you folks use? I'm thinking either of getting a new charger and battery combo or just a big bunch of alkalines and be done with it.