Do Cement Floors Ruin Car Batteries

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

Do cement floors ruin car batteries. But that s so other mechanics won t trip over them and crack their heads. We ve always been told not to leave car batteries on garage floors too. What doescause battery leaks. Cement is not conductive.

That word it had too many. Leaving a car battery on a concrete floor will ruin it i have seen three concrete floors ruin4ed by leaving car batteries on them. The reasons given for this prohibition vary depending on whom one hears the admonition. The battery is ok and the mark on the floor is permanent.

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. In that case even that trace of acid will react with the highly alkaline concrete to leave a mark on the floor. Leaking acid ate the concrete away.

However if the battery has been in use it may have a trace of acid on it. 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. One bit of whispered wisdom dictates that a car s battery must never be stored on a concrete or cement 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.

You re right about that. It didn t hurt the battery one bit but people who misunderstood the advice and wanted to appear knowledgeable came up. No it does not.