I use Ni-Mh 2300 mAh rechargeable batteries for my Fuji S602 but find if I leave them in the camera for a few days they lose their charge and I have to replace them with a fully charged set. Is this normal practice?
A digi cam will still use some power from the batteries when switched off. I've got 2 cameras that have a memory function for date & time etc that obviously takes some power to maintain (not sure if all cameras have this though). The cameras do not have separate removeable batteries for this so they must have a fixed rechargeable battery that takes power from the main batteries to maintain a charge. Also all electrical equipment will drain some power from installed batteries. I have a radio cassette player that I use for a couple of weeks a year on batteries. If I leave good batteries installed, by the next year they will have gone flat. If I remove them between useage then they will last a couple of years. These are non rechargeable batteries.
My Ni-Mh batteries even loose a charge over a period of a couple of weeks when removed from any equipment. This is standard for this type of battery and not a fault.