Q: battery not charging light came on

asked by on September 29, 2016

Started engine yesterday battery not charging light came on, gauge show it was out putting 6 to 9 volts. Check Battery terminals to make sure they were clean and getting good contact. Made sure belts were not off, etc. Came out next morning ready to remove the battery and alternator for testing. Started the truck and battery not charging light came on an then went off as out put climbed to normal 14 volts.

What is getting ready to go bad?

My car has 109000 miles.
My car has an automatic transmission.

I would still recommend getting the alternator and battery tested. The most likely cause would be the alternator. The alternator can have an intermittent failure that causes it to charge and not charge randomly. If this turns out to be the case after testing, I would recommend having the alternator replaced. I would also be a good idea to have the battery fully charged while the alternator is being replaced to ensure that the vehicle starts easily. If you need help testing the vehicle, a certified professional from YourMechanic can come to your car’s location to diagnose the battery light and proceed with the correct repair.

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

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

Battery light was on and now car won't start and keys stuck in ignition

Hi there. It more than likely that you are experiencing an issue with the alternator or the main relay as opposed to the battery itself. Once your car starts, power to all components and accessories is provided by the alternator;...

Car turn off when I stop at traffic light

If your vehicle is equipped with an idle air control valve or the throttle body is very dirty, these situations can caused the vehicle to stall. The idle air control valve will allow air to enter the engine when the...

Car dying while driving

The most likely cause is a dirty throttle body. The throttle body controls the amount of air the engine is getting. Your engine is drive by wire meaning there are sensors in the accelerator pedal, and a motor controlling the...

Related articles

How to Deal With a Car Battery For Long-Term Storage
If 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...
10 Biggest Car-Related Headaches and What to Do About Them
You You don’t want to, but if you're a car owner it's inevitable that at some point you will experience car troubles. It's also fairly certain that the machine you rely on will cause you grief when you least expect...
Symptoms of a Bad or Failing Alternator Belt
A failing alternator belt can cause the Battery Light to turn on, dimming or flickering lights in the car, and engine stalls.