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Re: Concrete and batteries
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Posted by Jon Hagen on November 23, 2005 at 19:43:04 from (69.26.18.12):
In Reply to: Concrete and batteries posted by Bob on November 23, 2005 at 15:23:15:
The guy in the post may be a battery tec,but this time he is wrong.
The reason for not storing a battery on a concrete floor is as real today with plastic battery cases,as it was in the old days of hard rubber or glass cells in a wood box.
Storing a battery with any case material on cold concrete will cool the battery below room temperature because the concrete absorbs heat from the battery making it cooler than room temperature. A battery at less than room temperature will "sweat",in that it absorbs moisture from the air,like a glass of cool beverage. The ever present slight sulferic acid slime coating on the internal and external surface of the battery cover will conduct electricity between the battery posts and slowly discharge it. If the battery is stored off the cool concrete floor on wood or other insulating material,the battery will be much closer to room temperature which will lessen or eleminate the sweating effect. If no sweating takes place,then the conductive acid/water slime layer on the battery cover drys,leaving only dry sulpheric acid crystals which conduct little power,so the battery discharge is much slower. This effect is more pronounced if the battery top is dirty which holds a thicker,and more conductive slime of moisture condensed from the air and sulferic acid.
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