🚀 go-pugleaf

bdhall@en.ecn.purdue.edu (Brian D Hall) writes:
>
>	Freezing DRY CELL/ALKALINE batteries will keep them more or less
>indefinitely.  What you are effectively doing is preventing the chemical 
>reaction that produces the voltage from ever happening.  It will not harm
>your batteries.  Just make sure you give them enough time to thaw before
>you intend to use them.
>	NEVER FREEZE ANY BATTERY WHICH CONTAINS WATER (obvious reasons).
>
>	In addition, placing batteries in a cooler (not freezing) will prolong
>the life of the batteries.
>
>   Brian Hall

let's qualify that statement just a little; my car battery contains water 
( and sulfuric acid ) and here in minnesota, it is regularly exposed to
temperatures well below zero (f). the chemical reaction that produces
electricity still happens ( I get my car started ) and the battery is
definatly not thawed out. 

so maybe this is the true statement about freezing batteries.

 1 - the chemical reactions that take place in any electro-chemical battery
slow down when cooled. this includes both normal operation and self discharge.

 2 - it has to get damn fool cold before a fully charged wet cell battery
freezes. if it's that cold, I probably should not be going out into the
weather.


-- Dan Meyer

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