Do Cement Floors Ruin Car Batteries

Leaving a car battery on a concrete floor will ruin it i have seen three concrete floors ruin4ed by leaving car batteries on them.

Do cement floors ruin car batteries.

That word it had too many. One bit of whispered wisdom dictates that a car s battery must never be stored on a concrete or cement floor. Batteries used to be topped off with water which resulted in acid being spattered about. However if the battery has been in use it may have a trace of acid on it.

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. What doescause battery leaks. No it does not. The battery is ok and the mark on the floor is permanent.

But that s so other mechanics won t trip over them and crack their heads. Cement is not conductive. 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. If you put one on a concrete floor without carefully washing it the acid ate into the concrete quickly ruining the floor.

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. We ve always been told not to leave car batteries on garage floors too. In that case even that trace of acid will react with the highly alkaline concrete to leave a mark on the floor. Today s batteries have plastic cases there is no risk of the battery degrading from being on a concrete floor.

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. You do not want to sell a customer a battery that is close to dead. You re right about that.