Battery reading zero volts at terminals

Asked by ManifestG Apr 29, 2020 at 04:21 PM about the 2015 Ford Taurus Limited

Question type: Maintenance & Repair

Car has been sitting in garage for 24 days without starting.  
The manual states that the vehicle has battery protection
that will shut down specific functions to preserve battery
during low voltage situations. I'm curious to know if it is
really possible that the battery, which had zero charging
indications when parked 24 days ago, could possibly be
completely dead? Any trouble shooting advice you could
lend before I simply pull the battery and replace?

3 Answers
39,085

beatupchevy answered 4 years ago

It may be a gel battery like other newer batteries I don't have the same test results with them , I thought mine was beat and NAPA put it on a charge and it was good to go .

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155,665

James answered 4 years ago

If the battery is original to the vehicle it's time for a new one. As a comparison I've let my 08 Grand Marquis sit for over two weeks and didn't have a problem. On newer vehicles there's always something pulling power from the battery! Even after the vehicle goes "to sleep" memory functions are still kept, for example. Plus there's more than one computer in the vehicle. A new Cadillac, for example, has over 40! So if the battery is older or you live in a colder climate it's best to keep a battery maintainer on it or start it up and let it run periodically. Hope that helps! Jim

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F_O_R answered 4 years ago

Most chargers will not charge a stone cold dead battery. There is a trick if you have a good battery and a set of jumper cables. Hook up the charger to the good battery and use the cables to hook the good battery to the dead battery. Postive to Positive and Negative to Negative. If the old battery is salvageable this trick can bring it back.

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