since I have an opinion on everything I thought I would comment on this one.

I am not sure that the fridge is the best place for battery storage. The cool temps make sense to keep the chemical reaction in the cell slowed down so that they last longer. But the fridge is also a very humid location as you open and close the door a lot. I would be more inclined to store them in a closet or somewhere cool but dry. Corosion on the contacts yields to very poor energy transfer... add to that the if you get enough humidity on the cell it can also be conductive (very little, but enough to begin a very very slow discharge).

In any case, it's a good idea to have spare batteries (and bulbs!) for the flashlights on hand

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