Battery light stays on.

Asked by Feb 27, 2017 at 10:56 AM about the 2007 Chevrolet Cobalt 1LT

Question type: Maintenance & Repair

My battery light came on & stayed on this morning
when I started my car & I could feel it was at a low
power on accelerating. I have a 2007 Cobalt LT,  I
have owned the car just over 2 years now & have
had no battery issues with it at all, so now I'm
wondering if it's possibly my altenator? I don't live
near a mechanic & worried to drive it anywhere to
get it checked out. What things should I check for
first at home?

2 Answers

76,295

Do you have a digital multi meter? You can check the battery voltage, it should be 12.5 at the lowest point to 12.7 DCV fully charged. You may have to have the battery charged. Then you can check with the engine running at the battery to see if there is 13.8 to 14.7 DCV charging at the battery. These readings would show the alternator is working. Anything different then it is not.

1 of 1 people found this helpful.
4,465

I agree with Rowefast. It sounds like a charging system problem, but some proper diagnostics are required first. The car will run for quite a while during the day when you have no lights on so if you can put a battery charger on it and get it fully charged you should have no problem driving it to a repair shop as long as its not hours away. While this does not sound like a battery problem, it wouldn't hurt to have your load tested as well. They don't last forever and yours may be on its last legs as well.

Your Answer

Chevrolet Cobalt Experts

  • #1
    lightGear
    Reputation
    1,200
  • #2
    munron
    Reputation
    1,120
  • #3
    dandyoun
    Reputation
    970
View All

Related Models For Sale

Used Chevrolet Malibu
1,133 Great Deals out of 62,115 listings starting at $880
Used Honda Civic
791 Great Deals out of 60,727 listings starting at $950
Used Chevrolet Impala
588 Great Deals out of 34,468 listings starting at $900
Used Ford Focus
811 Great Deals out of 61,929 listings starting at $900
Used Ford Mustang
599 Great Deals out of 39,170 listings starting at $1,895
Used Honda Accord
1,099 Great Deals out of 73,062 listings starting at $1,100
Used Toyota Corolla
956 Great Deals out of 64,765 listings starting at $1,850
Used Toyota Camry
1,113 Great Deals out of 86,587 listings starting at $800
Used Dodge Charger
465 Great Deals out of 33,553 listings starting at $1,999
Used Nissan Altima
1,317 Great Deals out of 77,537 listings starting at $1,695
Used Nissan Sentra
775 Great Deals out of 50,487 listings starting at $2,200
Used Volkswagen Jetta
648 Great Deals out of 35,832 listings starting at $995

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.