Will a car stay running if you disconnect the battery?

I think my car’s battery is the root of some problems I’ve been experiencing. But to test whether it’s the battery, I want to try running the car even with the battery disconnected. Is this possible?

Annette Maxon · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Sorry to hear that you’re having car troubles!
Yes, a car will stay running if you disconnect the battery. This is because the alternator should provide sufficient energy to power the vehicle even when the battery is removed. However, if the vehicle dies, you have a faulty alternator that should be replaced.
If you’re experiencing more car issues than usual, it may be a good time to consider buying additional
car insurance
. Not only will this protect you from breakdowns or accidents that are a result but it can also save you money on your annual premium! The easiest way to do this is to download the Jerry
super app
is the easiest and most effective way to find a car insurance policy that is customized for you.
After providing you with a comprehensive cross-analysis of the best policies across providers, Jerry will handle the phone calls, paperwork, and renewals for your top pick so that you don’t have to. They can even help cancel your old policy! So why do all that extra work when Jerry can do it better?
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