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Something is draining my battery overnight. I have taken out alternater and had it checked out. Auto parts says alter, and battery are good.

Battery and alternater

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How much time goes by to affect the battery? Cars today have many auto-light features but start with obvious things like the trunk light or under hood light that might not be going out. To find out the size of the drain disconnect the battery cable and connect an ammeter between the battery post and the terminal. Large drain big thing small number light bulb.

Posted on Dec 04, 2014

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Posted on Jan 02, 2017

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4 Answers

I have 92 Volo 740, new battery, alternator checked OK but it dies out overnight


it sound like you may have a parasitic draw.. its time to get out the multimeter and start probing for cirquits with a draw when the car is off

if you dont know how to probe for parasitic drains. or just want to make sure you do it correct. i reccomend checking youtube videos

heres a few suggested ones.

Nov 14, 2016 | Cars & Trucks

1 Answer

Have a 2009 Saab 9.7x4,2i starter good alternater good but battery dies over night


Usual culprit is boot (Trunk) light.If not, try disconnecting battery and if a spark jumps as you take the lead off it shows there is a power drain. If no power drain it points to a faulty battery.

Feb 22, 2015 | Saab Cars & Trucks

1 Answer

Power drain new battery,alternater (10 months ago)Replaced starter a week ago. New 40 and30 amp fuses,also relays and block breakers under hood. cables clean and good Wiring checked, no short found....


if the battery is being drained there is something causing it to happen, check that all the lights are off glove box, trunk, you may have to get someone to get in the trunk & close it to see if the light goes out, when it is dark lift the hood & move the wiring everywhere you can to see if there are any sparks that might indicate a bare wire touching something.....hope this helps......cheers.

Sep 05, 2011 | 1997 Mercury Sable

1 Answer

Something is draining my battery - tried new battery and checked the alternater. What else could it be ?


you have a parasitic drain. if your not a auto tech dont look for it your self go to a shop. somethis is shorted to ground.

Feb 16, 2011 | 2002 Oldsmobile Bravada

2 Answers

Battery won't hold charge for more than a day. Starter system checks out fine.


Try unhooking it overnight to see if it's a short in the car or the battery. If unhooking it stops the drain, look for a short in the car.

Please see my tip at http://www.fixya.com/cars/r5925550-dead_battery_troubleshooting . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.

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2 Answers

Im seeing a battery icon warning light in the dashboard.


my battery light is on got alternater check an it was good also the battery but light still on help me

Sep 04, 2010 | 1998 Chrysler Sebring

1 Answer

Battery light is on


GO TO LOCAL AUTO PARTS STORE AND HAVE ALTERNATER VOLTAGE CHECKED SHOULD BE ABOUT 14.0 TO 14.6 WITH ENGINE RUNNING. IF NOT REPLACE ALTERNATER

Oct 01, 2009 | 2003 Nissan Altima

1 Answer

91 chevy caprice- will not start after sitting afew hours,


Have you taken the battery back to have it retested? Sometimes even a new one can be bad. Does this only happen after it sits overnight?

Mar 19, 2009 | 1994 Chevrolet Caprice

1 Answer

Sometimes alternater does not charge battery


Drive the car to the auto parts store and have them test the battery and alternator for proper charge.  You probably just bought a dud, even though they are new.  Doesn't happen much but does happen.

Jan 02, 2009 | 1983 Oldsmobile Delta 88

2 Answers

1990 oldsmobile trofeo


Battery may go dead overnight on cars with electronic level control (1990-92).

You may want to get an auto electrician to look at it. This was a common problem

May 26, 2008 | 1990 Oldsmobile Toronado

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