In the past yes batteries stored on concrete floor would loose charge because of the free electrons grounding themselves outside of the battery.
Should you put a car battery on a concrete floor.
Always store a battery elevated off the floor on something that can get air movement around it.
Mythbusters battery vs concrete floor.
Never store a car battery on a concrete floor or a dirt floor for that matter.
Batterystuff knowledge base article answering the popular question about battery storage.
And here s the interesting thing clay.
New batteries and ones in good condition are almost immune to such temperature issues.
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.
Modern batteries are fully insulated and do not experience this problem anymore.
Is it bad for your battery.
And because concrete is often cooler than its surroundings leaving a modern battery on a concrete floor might actually make it last longer.
Like on a board sitting on 2 blocks.
Apparently he is under the impression that putting a car battery on a concrete floor would drain it.
Concrete also conducts heat far quicker than wood.
And if you re curious see.
Before we dwell into the details the myth has some historical basis.
Naturally if a topic or concept is not very well understood people can fall prey to all sorts of rumors and myths that spread from generation to generation and the question of a car battery draining on a concrete floor is one of them.
Ive been testing this to see if this is fact or myth with a agm battery and a lithium.
Not only that but that the battery would not take a charge after this occurred.
So today you can put your battery on a concrete floor for as long as you want.
The other way around isn t always true with an already damaged battery leaking battery acid on a concrete floor potentially causing some damage to said concrete.
If you put a used battery on a garage floor and leave it there in unheated conditions there s a good chance that it may fail to start the car when replaced.
The design of modern day batteries includes a hard plastic shell that eliminates the intake of moisture thus making the garage floor a great place to put your car battery.
So if you took two identical batteries placed one on a concrete floor and one on a wooden shelf.