It didn t hurt the battery one bit but people who misunderstood the advice and wanted to appear knowledgeable came up.
Do cement floors ruin car batteries.
Cement is not conductive.
The battery is ok and the mark on the floor is permanent.
However if the battery has been in use it may have a trace of acid on it.
You re right about that.
If you put one on a concrete floor without carefully washing it the acid ate into the concrete quickly ruining the floor.
No it does not.
Contrary to very popular belief even touted by many a mechanic today s car batteries with their hard plastic shells will not discharge or otherwise be damaged when placed on a concrete floor.
But that s so other mechanics won t trip over them and crack their heads.
Leaving a car battery on a concrete floor will ruin it i have seen three concrete floors ruin4ed by leaving car batteries on them.
At northeast battery we tell our distributors that storing batteries on a concrete floor is a good idea as it helps keep the battery cool so it discharges less.
In that case even that trace of acid will react with the highly alkaline concrete to leave a mark on the floor.
That word it had too many.
What doescause battery leaks.
Cement and concrete floors provide a fairly good barrier between the car battery and extreme temperature changes that could otherwise cause damage to the battery cells allowing for a discharge leak.
Interestingly enough many experts such as car talk s click and clack think that storing car batteries on concrete floors might actually be a great idea because the cold concrete can help slow down the self discharge leakage rate.
Batteries used to be topped off with water which resulted in acid being spattered about.
We ve always been told not to leave car batteries on garage floors too.
Today s batteries have plastic cases there is no risk of the battery degrading from being on a concrete floor.
Leaking acid ate the concrete away.