You experience with AA alkaline batteries is typical.
Remember, you also spend a good bit of time playing with the menus and admiring the photos you did take.
DO NOT get Ni-Cad batteries (not enough umph).
Get NiMH batteries.
The rule of thumb is:
All things being equal, the larger the mAh rating, the longer they last on a charge.
900 mAh is to wimpy.
Look for 2000 mAh or larger
If your charger is for Ni-Cad, do not use it for NiMH batteries.
If your charger is for NiMH, it is OK.
Enjoy the new camera.
first time out with the new camera, fresh batteries (Energizer with a 2012 expiry date) and 21 pictures later (all taken in bright sunlight so no flash),,,, "your batteries are exhausted" say what?????!!!!!
so, i reckon to go the "rechargeable ni-cad" way,
if i have a selection ranging from 900 to 2800 mAh, (and all more or less in the same price range $20-25)
will my battery charger (rated at 4xAA @ 250mA)be able to handle the 2800mAh?