Battery Drain Source
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Joined: Dec 2011
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Do you mean that you were reading across the battery terminals, and when you disconnected the ground cable from the battery the voltage dropped almost 2 1/2 volts?
.......Yes.
How big was the spark when you disconnected the cable?
........No spark.
It's not entirely unheard of to lose a cell in the battery.
........It's a new battery and I had it tested at Napa....they said it's good.
Were you able to check the voltage with the engine running, when you got the jump start? (just across the terminals, with everything connected)
14.35V would be ideal output for the alternator.
High enough to charge, but not so much as to boil the battery dry.
.......I wasn't able to check the voltage with engine running yet, but will do so.
If you have the tester in line (between the cable and the + post) and see any reading with the ground cable disconnected something is seriously wrong.
.......Yes.
How big was the spark when you disconnected the cable?
........No spark.
It's not entirely unheard of to lose a cell in the battery.
........It's a new battery and I had it tested at Napa....they said it's good.
Were you able to check the voltage with the engine running, when you got the jump start? (just across the terminals, with everything connected)
14.35V would be ideal output for the alternator.
High enough to charge, but not so much as to boil the battery dry.
.......I wasn't able to check the voltage with engine running yet, but will do so.
If you have the tester in line (between the cable and the + post) and see any reading with the ground cable disconnected something is seriously wrong.
Thanks again for your help on this!!!!!!
-Nabor J
Freshman User
Joined: Apr 2011
Posts: 43
Likes: 1
Aftermarket stereo, remote start, burglar alarm
Sounds like you recently may have installed one of these items. then started having prob's? Any red wire going to any of these items almost always has to be ignition activated
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tgowers
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