Does putting a Car Battery on cement drain it?

For years I've been told not to put a car battery down on a bare concrete floor. That it would drain the battery and somehow damage it's rechargeability (sp). Is this true or an old wives tale?Does putting a Car Battery on cement drain it?
Many years ago, auto batteries were made with a wooden case around a glass jar with the battery in it. Any moisture on the floor could cause the wood to swell and possibly fracture the glass, causing it to leak. Shortly after the introduction of "Hard Rubber" containers, which were somewhat porous and of a less than ideal design, there was a chance of current being conducted through the container of a high carbon content if the moist concrete floor permitted the current to find an electrical ground. These are two of the older reasons for not storing batteries on a concrete floor.



There is absolutely no problem with storing any modern battery on a concrete floor.
I've been told the same.

Good one for Myth Buster's

Send it in.Does putting a Car Battery on cement drain it?
No...it will not drain the battery...but an unused battery will lose charge over a period of time no matter where it sits...;-}
Supposedly, it is true. I read an article on it some years ago and I can't remember why it did it, only that it did. So, put them up on a shelf and then you won't have to guess.Does putting a Car Battery on cement drain it?
It's an old mechanics tale...there is no proof what-so-ever that putting a battery on any type of surface discharges it. It's encased in plastic so how is it going to discharge?

Try it...of course if a battery sits too long and not used it can go bad.
NO. The coolness of the cement may "cool the battery down a little and make it MARGINALLY less effective, but no. it does not drain.



If you leave it there, it will lose charge, 1% a day or so, but all Lead/Acid batterys do that.
True...years ago. Technology has changed and yes, you can set batteries you buy now on concrete. B/c I'm old fashioned, I still find myself setting them on pieves of wood just out of habit.