I agree.No, not with modern batteries. The idea behind cooling something is that chemical reactions slow, and thus the self-discharge problem is minimized. The old lead-acid cells benefitted from this, alkaline and lithium do not.
I tried the batteries in the freezer, but I couldn't tell any difference.
I've gone over to Nickel-Metal Hydride rechargeable batteries, and I'm just tickled pink with the results.
They don't run down in a month sitting waiting to be used like the Nickel Cadmium rechargeable batteries used to.
Solved all my battery storage problems! I just keep a few extra charged ones laying around, and when the old ones come out, I put the fresh ones in the device, and throw the discharged ones in the charger!