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Battery is Dying

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Guest
Anonymous Poster

Nov 10, 2006, 11:03 AM

Post #1 of 5 (3028 views)
Battery is Dying Sign In
New battery. After jump start, alternator reads 14 v and battery reads about 14v. When I kill the engine, the voltage starts dropping almost like a timer. 12.98, 12.97, 12.96.... In a matter of a few minutes, it's too low for the car to restart. If i disconnect the battery from the car, it holds it's charge just fine. Is there deffinetly something drawing current, or is there a possibility that the battery just needs a good charge? This car sits most of the week. I start it once a week for about 5 minutes and the battery reads proper voltage as soon as it is started.

Suggestions???


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 10, 2006, 12:17 PM

Post #2 of 5 (3024 views)
Re: Battery is Dying Sign In
Voltage will read 14 or so when running. It will if normal return slowly to about 12.2 when car is off for a while.

To check for a drain disconnect neg bat terminal and connect a test light with everything off an no hood light on. It should not light up. If it does something is drawing current. Next would be to pull fuses until light goes out and at least you know that is the problem circuit.

Also note: Even new batteries can be bad and they don't like constantly being discharged. Good luck with the project, T



Guest
Anonymous Poster

Nov 10, 2006, 12:42 PM

Post #3 of 5 (3022 views)
Re: Battery is Dying Sign In
Do I hook up the test light from the disconnected neg cable to the pos terminal?


Tom Greenleaf
Ultimate Carjunky / Moderator
Tom Greenleaf profile image

Nov 10, 2006, 1:40 PM

Post #4 of 5 (3021 views)
Re: Battery is Dying Sign In
NO -- You hook up between disconnected cable and neg battery post. Sorry if I was confusing, T



Keoni
Novice
Keoni profile image

Nov 11, 2006, 6:49 PM

Post #5 of 5 (3015 views)
Re: Battery is Dying Sign In
no from the neg cabel to the neg side of the battery --as long as you have a bright light you have a draw ie: open the door - or turn on the key--walah bright light

Keoni
copy and paste
http://members.tripod.com/~bigisland/index.html

for free advice.

Keoni





 
 
 






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