Battery discharge, radio and battery tender... - Alfa Romeo Bulletin Board & Forums
 
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post #1 of 6 (permalink) Old 06-08-2015, 11:56 AM Thread Starter
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Battery discharge, radio and battery tender...

Last fall, my '88's radio ceased operations. Likewise, I was getting a small discharge of the battery when key was out. The battery was going on 15 years (young), so I didn't think too much about the battery. Moreover, it was sufficiently nearing storage time that i thought it'd be something best left until spring.....

Well, spring came and went and the battery charger indicated a red blinking light when the car was on the tender--suggesting the 'battery not hooked up correctly.' The battery had some crud that looks like it leached out on the top, so I though maybe the battery just had an internal failure--and it was done. Off to get a new battery.

Hooked up the new battery and everything was fine--until i let the car sit a little bit. New battery fully discharged. I hooked up this battery to the tender and again got the red blinking light indicating the battery not hooked up correctly....

Any idea what fault is going on here? Is the alternator shorting internally? Only thing I can think of that would cause this. Otherwise volt guage is spot on when running, so the regulator is fine, may just be the internal windings? Last datum point about the radio, still non-op, but I have to check the fuse to it; imagining they are related in some way, but not sure....

If you can, please do advise!

Thanks in advance,

Adam
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post #2 of 6 (permalink) Old 06-08-2015, 01:06 PM
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Is the battery totally discharged? Most battery tender type units won't charge a fully discharged battery (and might thus show the blinking red light).

- - Eric
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post #3 of 6 (permalink) Old 06-08-2015, 01:30 PM Thread Starter
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Yes, Battery is fully discharged, but that is a symptom. Why is it discharging? And if it is the alternator, im assuming that too would give the same indication on the charger? Short of hauling the alternator out and taking it to get bench tested, guessing im looking for a little direction prior to hunting and pecking at problem sources. .....
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post #4 of 6 (permalink) Old 06-08-2015, 01:33 PM Thread Starter
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Ill put it on the regular charger for a bit, then the tender to test. But still will need to solve why it discharges.......
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post #5 of 6 (permalink) Old 06-08-2015, 01:44 PM
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Ill put it on the regular charger for a bit, then the tender to test. But still will need to solve why it discharges.......
and just disconnect the wiring from the alternator with it still in the car. if the bat stays alive then that was your issue.
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post #6 of 6 (permalink) Old 06-08-2015, 01:49 PM Thread Starter
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Simplicity its finest!!!! Thats the quick and non-dirty confirmation test I hadnt gotten to.... Thanks Steve
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