How long can a car battery sit?

I'm going on a work trip and leaving my car behind. Since it's for a month, I'm worried about my battery. How long can a car battery sit before it goes flat?

Matthew Macgugan · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Great question! Your car battery can sit for as long as two weeks before it’ll need to be charged again.
If you want to avoid coming back from your trip to a dead battery, have a family member or trusted friend come over to run your vehicle for about 15 minutes every few days. This should give it enough of a charge to last until you return and start driving normally again.
The battery may last up to six months if you disconnect it from the vehicle while you’re away. It may still need recharging after a while, but won’t die nearly as quickly as if it were sitting in the vehicle, given that it’s stored properly.
Concerned about your car breaking down? Try a roadside assistance membership with
. Jerry’s roadside assistance membership protects you with their nationwide network of 55,000+ service providers.
Enjoy your travels!
View full answer 
Jerry partners with more than 50 insurance companies, but our content is independently researched, written, and fact-checked by our team of editors and agents. We aren’t paid for reviews or other content.

Join 4M+ members in lowering their car insurance

Easiest way to compare and buy car insurance

No long forms
No spam or unwanted phone calls
Quotes from top insurance companies
Find insurance savings