I have a 2001 Jeep Grand Cherokee Laredo, and I can't get the battery to keep a charge.

10

Asked by Jun 22, 2014 at 12:45 PM about the 2001 Jeep Grand Cherokee

Question type: Maintenance & Repair

I've had the battery tested, and it is
fine. The alternator has been tested
too, and it is running low but should
still be fine. I had the terminals
replaced, and there isn't corrosion on
the battery.

7 Answers

113,155

Alternator has to be putting out around 14.5 volts to keep a battery fully charged.

10

The mechanic said it was putting out 13.8, would that small of a difference cause my battery to discharge rapidly?

113,155

That's mighty close. Does it discharge over night or while you are driving?

10

It discharges overnight.

113,155

www.youtube.com/watch?v=zdIKNnwEjIs -- check this out. Shows how to test for parasitic draw. You probably have something staying on draining the battery over night.

1 of 1 people found this helpful.
113,155

Do you leave a cell phone charger hooked up or any other after market item plugged into cig lighter over night? If so that's probably your drain.

10

Thanks, I'll definitely try that out! Nope, I always unplug my phone charger.

1 of 1 people found this helpful.

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