Chargin' batteries

[Tom]

I would expect you should enter the rating of your battery, which is the discharge rating, or 3300 mAh.  The fact that it takes more to charge a battery than it supplies while discharging is covered by one of the laws of thermodynamics, and thus is present in all battery types.

In short, don't worry about it and try it.  You know if your battery charged correctly if you feel the temperature immediately after it finishes charging.  It will be quite warm; if it's not, then that means it didn't charge all the way.

[Grinder]

The mAh rating is based on the voltage cut off of 0.9V - if you use a discharge tray you go beyond that limit.  Set your battery charger to 4500 mAh if you are using a discharge tray or 3800 if you are going to just discharge to 0.9V per cell.

Start with 8 mV per cell for GP3300 cells...  also use the top off feature most newer chargers have for NiMH batteries.  This will perform the same function to equalize the charge on the cells with a low charge rate.  5 or 6 amps is a good charge rate for life/performance of the GP3300 cells.