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Can a bad alternator ruin a battery?
My car’s battery unexpectedly went bad. After I replaced it with a brand new one, that one died, too! Can a bad alternator ruin a battery?
Melanie Mergen · Updated on
Reviewed by Shannon Martin, Licensed Insurance Agent.
Oh no—sorry to hear that happened! Can a bad alternator ruin a battery? Yes, a bad alternator could prevent your vehicle’s battery from recharging while it runs, leaving you with a dead battery the next time you try to start your engine.
In addition to a dead battery, here are some other signs you might have a bad alternator:
- Frequent engine stalling
- Your check engine light is on
- Dimming cabin lights or headlights (especially if they brighten and dim with your RPM)
- Burning smell
- Groaning or screeching noises
If you suspect you have a bad alternator problem, having your mechanic take a look is a good idea.
As you’re looking after your car, it might also be a good idea to take another look at your
car insurance
policy. If you need better coverage at a better rate, the Jerry
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- Gregory R.
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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.
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