what happens to batteries when they are put in the freezer?

Answer 1

I have never put them in the freezer because I worry any liquid paste in them would freeze and crack open the case. I do always put them in the refrigerator to make them last longer by slowing down their chemical reactions that self-discharge them. When you take them out and warm them to room temperature they are as good as new.

I had bought a box of 20 AA batteries during last year's Thanksgiving sales. I did not put them in the refrigerator. When I took some out of the box to use last month they were all dead and useless. That reaffirms my faith in refrigerating.

Answer 2

They get cold!! No, seriously, All matter is in constant flux, with atoms and molecules continously moving about within a substance. Batteries have a shelf life... an amount of time a battery will provide energy. And batteries will self discharge due to inherent internal resistance. A battery is itself a closed circuit which expends its own energy. Freezing a battery, slows down the Brownian motion of the molecules within it, and also lowers the internal resistance, which extends the shelf life.

Answer 3

They get cold.

This slows the chemical reaction.

So they give less power - which corresponds to their internal resistance increasing.

For instance, a lead acid battery loses 50% of its power for every 10C reduction in temperature.

Answer 4

DON'T put them in the freezer, it can burst them. Keep them in the fridge instead, that will slow the deterioration and increase the 'shelf life'.

Answer 5

they last longer