Skip the auto shop - Our mechanics make house calls

Q: Battery goes dead.

asked by on

I have been told that if I leave a car battery on a concrete floor any length of time it will discharge a lot faster than if I left it sitting on a piece of timber. Is that applicable to all batteries automotive? thankyou for any advice Regards MICK

When a battery is subjected to cooler temperatures they will generally produce less voltage and also a battery will have a small amount of voltage transfer potential through the plastic housing of the battery. When you sit a battery on concrete the floor will be colder than the ambient air temperature and cause a slight lowering of the battery over time. If the concrete has a lot of moisture in it and all concrete will have some levels of moisture then the battery may transfer voltage to ground and it may kill the battery over a long period of time. Wood is a pretty good insulator from the cold and also a good insulator of the flow of voltage. This is why putting a battery on wood is better than setting battery on bare concrete.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Car won't start after sitting for a year.

If a vehicle has not been started for a year, then you may have a failed fuel pump and the fuel inside the tank may be degraded and can cause problems like a clogged fuel injector. The recommendation I would...

Q: Car howling and jerking at stops

A howling sound is often times a sign of a failing or weakening alternator. As you may know, the alternator is a unit that is responsible for charging the battery while the engine is running. When the alternator begins to...

Q: Car continues to have problems starting and keeping the battery charged

Hi there, thanks for writing in. Quite often, the issues you're talking about are caused by an ignition or fuel related problem, which can cause difficulty starting the engine. Once the engine fires however, it should charge the battery. If...

Related articles

How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...