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  #1  
Old March 1st, 2013, 05:55 PM
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scott
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Battery question

Hi folks. Got a new battery for my '95 d90 ST, and its not holding a charge well. I keep needing to jump it. I'm wondering if I bought the wrong size and the alternator doesn't like it. (Or maybe my alternator is bad since old battery "seemed" bad too!). In any event my question is.... does anyone knowing this battery i have now is OK for the D90? Thanks much.

EXIDE Classic
Part #49-60
Group size 49
serial # 2000844
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  #2  
Old March 1st, 2013, 06:15 PM
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Neill Thornton
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I don't know about Exide, but the Interstate battery that Josh has, and the Optima I have are both in the 825 cranking amp range. Do you know what your cranking amp rating is for it?

I also assume that the charge/alternator light is not lit on your truck.
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  #3  
Old March 1st, 2013, 06:17 PM
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J. Michael McCaig
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Disconnect the battery and see if it holds a charge. If it does then something in the vehicle is draining it. Suspect bad diodes in alternator.
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  #4  
Old March 1st, 2013, 06:30 PM
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Most garages will do a quick battery load test and check the alternator output for free. Takes about 3 minutes to do both. You can also do a quickie test by testing the battery voltage with a volt meter with the engine off and with the engine running. If all is well it should be approximately 12.5v motor off and 14.5v with the motor running.
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  #5  
Old March 1st, 2013, 06:32 PM
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A rover should start fine with a lawn mower battery.

You either have a quiesent draw issue or the battery is old and dead.

If you are going to replace it, use the giant battery they came with. INterstate lists the part number. If you want to really step up, use the battery speced for a mid99-2002 p38a range rover.
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  #6  
Old March 1st, 2013, 07:01 PM
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scott
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Thanks all. Appreciate the feedback. I will definitely get the alternator and battery checked. Good call. No dash lights on, so that's good.

Hey NAVYDEVIL.... How do I determine my batts cranking amp range? Thanks again

------ Follow up post added March 1st, 2013 07:02 PM ------

(Ps. I suspect a quiesent draw issue. )
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  #7  
Old March 1st, 2013, 07:13 PM
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Neill Thornton
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It should be all over the battery... it may also list the Cold Cranking Amps, or CCA.
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  #8  
Old March 1st, 2013, 07:40 PM
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I looked it up. CCA is 850. CA is 1000. RC minutes at 25 amps is 140. Volts 12.
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  #9  
Old March 1st, 2013, 10:26 PM
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Exide is a good brand of battery.
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  #10  
Old March 1st, 2013, 10:47 PM
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Neill Thornton
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Quote:
Originally Posted by ssi19 View Post
I looked it up. CCA is 850. CA is 1000. RC minutes at 25 amps is 140. Volts 12.
OK, well that's more than sufficient.

Do you own a multimeter that you can measure voltages with?
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  #11  
Old March 2nd, 2013, 12:05 PM
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Good call. I am borrowing a multimeter from a friend. Will do a draw test to get to the bottom of all this. Thanks for your input everyone
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