Nimh maintenance
I currently use 3300 GP Nimh, I charge 5 to 6 amp w/5mv peak each cell and discharge to .9 volts per cell when storing. If you plan to use more that once in a day. I would simply discharge to .9 volts per cell and leave for at least 30 mins or more then tray it for another 3 mins just before charging. Also check the Fukuyama site as well.
Regards,