Battery Draining
Thread Starter
Cruising
Joined: Jul 2004
Posts: 12
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Battery Draining
Got a 1985 coup. Battery keeps draining. Added new starter, new alternator, and it has a 2 year old battery. had the alternator checked and it is good. Ran a VOM from alternator and battery and it is registering about 10.2. Trying to sale the car but cant do that if it is not running right. NEED HELP! Bryan 
Melting Slicks
Joined: May 2004
Posts: 2,524
Likes: 10
From: Lufkin Texas
St. Jude Donor '05-'06
A NEW alternator isn't always a GOOD alternator. You should have anywhere from 13.8 to 14.5v at output of alternator while turning.
10.2 is not going to run a 12v system. Now if you mean you have 10.2 at battery but there's say 14 at alternator than you obviously have a dead cell(s) in battery or somthing in you cars electrical systems with a problem drawing excessive amps. A 2 year old battery is not immune to trouble. I've seen a battery killed in 2 days by over charging and over draining in a high output competition stereo situation. Then I've seen one die in 2 months by under use. So a batterys life span, like everything else, is not always about time but often more about what it has been subjected to and how well it was made.
You should have your alternator and battery checked out again by place of purchase and maybe warrantys will cover.
10.2 is not going to run a 12v system. Now if you mean you have 10.2 at battery but there's say 14 at alternator than you obviously have a dead cell(s) in battery or somthing in you cars electrical systems with a problem drawing excessive amps. A 2 year old battery is not immune to trouble. I've seen a battery killed in 2 days by over charging and over draining in a high output competition stereo situation. Then I've seen one die in 2 months by under use. So a batterys life span, like everything else, is not always about time but often more about what it has been subjected to and how well it was made.
You should have your alternator and battery checked out again by place of purchase and maybe warrantys will cover.
Last edited by skateparkdave; Jul 11, 2004 at 03:15 PM.
