Quite some time ago I've got 2 rechargeable batteries for the MGD2, called Doctor Power. Unfortunately both aren't working anymore. Does anyone know how to fix it? Probably it's possible to replace the battery with a standard 9V block battery. btw, here's a picture of the Doctor Power: http://cgi.ebay.com.hk/ws/eBayISAPI.dll?ViewItem&item=190297204493
Batteries that old are usually shot with no way to revive them, in all likely hood you can pop it open and swap in something compatible.