How to Deal With a Car Battery For Long-Term Storage

If you store your car for the winter, or for other long periods, it’s important to make sure that your car battery is properly cared for. Long term car storage can wreak havoc on your battery.

Isn't it okay to just occasionally run the car?

Perhaps you’ve heard that you can simply run your car from time to time in order to keep the battery operating properly, but there are problems with this approach. The most obvious is that you may be one location, and your car could be hundreds of miles away. And even if you have a friend or a relative who will go to the place where you store your car, and start it up from time to time, that may not prevent damage to your battery.

The theory behind regular starting is that it keeps the charge up in the battery, and also that it warms up the engine oil and coolant and is beneficial for the engine. The caveat is that for this to work, the vehicle has to be actually driven for a minimum of 20 minutes. A quick start and a bit of idling is going to cause condensation to build up in the engine and drive train, and this can cause corrosion that will lead to serious problems down the road.

How to store your car battery

The better course of action is to take your car battery out of the vehicle and bring it indoors. Then, hook it up to a battery maintainer. Batteries don’t work well when they’re left discharged, or at a low charge, for long periods of time. There are several battery maintainers on the market that don’t cost much, and they’ll keep your battery in good condition. This is the best method of car battery storage, and the one most recommended by mechanics.

It’s fine to store your car in an unheated facility, but bring your battery inside, and use a maintainer. That way, when you’re ready to drive your car again, you can be assured that you’ll be on the road again with no battery issues.


The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Need Help With Your Car?

Our certified mobile mechanics make house calls in over 2,000 U.S. cities. Fast, free online quotes for your car repair.

GET A QUOTE

Related articles

Understanding the Ram Oil Change Indicator and Service Indicator Lights
Car symbols, or dashboard lights, are a car service reminder. The Ram Oil Change Indicator tells you when and what service your car needs.
Which Cars Last the Longest?
The best cars are ones that last the longest without needing much maintenance. The Honda Civic has low repair bills and can rack over 200,000 miles.
How to Replace a Serpentine Belt
Replacing the serpentine belt can be challenging, as it involves removing the tensioner and determining the correct route to install the new belt.

Related questions

Car wont start, new battery alternator is good only turns on with battery charger.
It is common for a bad connection in the starting system to cause problems such as this. When you add the battery charger, it give it a little extra boost in voltage. Just enough to overcome the high resistance. The...
While driving my battery light came on and off, and as I made a stop to make a left turn. What does this mean?
Hi, thanks for writing in. The most common parts that involve this issue are the battery and the alternator. The starting/charging system should be checked to see if the battery is going bad and getting weak. It can then put...
No start no crank
Hello. If this occurred right after the vehicle was jumped and after driving the vehicle for a while then the fuses needs to be checked first. This is where I typically start as a battery (https://www.yourmechanic.com/services/battery-replacement) failure or a jump...

How can we help?

Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST.

1 (844) 997-3624 · hi@yourmechanic.com