Unplugged car battery still lose charge?

10

Asked by Nov 30, 2017 at 09:04 PM

Question type: Maintenance & Repair

Can a unplugged 12volt new car battery that is fully charged stored in a
garage lose its charge over a week’s time?

6 Answers

149,285

Only if it is bad to begin with.

1 people found this helpful.
86,645

Exactly. Exchange it, definitely sounds like a defect! HTH. -Jim

10

The battery owner says," That's impossible (unplugged battery losing charge)and won't exchange it. He stated I have a pallet of battery right there and I've never seen a new stored battery on one of these pallets ever lose its charge. Your generator is drsibibg the battery even when it's off."

1 people found this helpful.
149,285

Charge it up and do a load test on it.

1 people found this helpful.
86,645

If it fails the load test you know the battery is bad. Batteries have a date code on them. Depending on the manufacturer the code could be alphanumeric (L7=November 2017), or numerical (11/17=November 2017). If your battery isn't a big seller it may have been a year or more old when you bought it! So look at the date code to see. Wet filled batteries most certainly will discharge on the shelf over time and can be defective with a bad cell that will kill it quickly and/Or prevent it from holding a charge. I've had flights with retailers about defective batteries too. If the store manager won't help you threaten to call the store's corporate office or the battery manufacturer's corporate office. That should get results. HTH. -Jim

10

It shouldn't, unless there's something wrong with it.

1 people found this helpful.

Your Answer:

Maintenance & Repair Experts

  • #1
    dandyoun
    Reputation
    110,010
  • #2
    tennisshoes
    Reputation
    102,890
  • #3
    tenspeed
    Reputation
    86,800
View All

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. Content will be removed if CarGurus becomes aware that it violates our policies.