Drained battery over night

2008 FORD FOCUS
169,000 MILES • 2.0L • 2WD • MANUAL
Avatar
STUNCOLE1
  • MEMBER
  • 1 POST
My battery drained over night after i had the alternator changed but battery is still draining.
May 3, 2021 at 1:39 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
Advertisement
Avatar
ASEMASTER6371
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 52,796 POSTS
Good morning,

There is something that is draining the battery even after the car is turned off.

I attached a guide for you to view on checking the draw and help to narrow down the area that s causing the issue.

https://www.2carpros.com/articles/car-battery-dead-overnight

You will need to remove the negative cable and put a voltmeter in line. Red lead to the cable and black lead to the battery post. Set the meter to DC amps and measure the draw. It show be no more than 50-75 milliamps. Any more than that, you need to remove the fuses, one by one, to determine which fuse is causing the issue.

Make sure you charge the battery to 12.6 volts before the test.

https://www.2carpros.com/articles/how-to-charge-your-car-battery

Roy
May 3, 2021 at 3:42 AM
Advertisement