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View Full Version : Dead batt


jeffrie
06-22-2008, 01:50 AM
Wonderng if possibly it's no the stock batt that is now 12 yrs old.
Wake up one morning and it won't even attempt a reveloution, put a charger on it and no difference... 12Volts everywere and all windows/locks/lights work...
but no turn over & no radio.
Hard to get to 10 PSI when you can't start the beast for transport into the building for the upgrades...

everlast
06-23-2008, 08:50 AM
Do the interior lights dim dramatically when you turn the key into the starter pos?

jeffrie
06-23-2008, 02:31 PM
Didn't look, had it turn over slowly for a few revolutions with the charger on 50 amps.
Weird never encountered this before 12 volts @ the battery and still no amprage?
Geuss it's done, be nice to find another battery to try it on before I splurg on a new one.

everlast
06-24-2008, 08:05 AM
Does it actuall read 12v or something like 12.8? 12.0 would be quite dead, but no dead cells. A real slow charge could bring it back, perhaps.

In any case, that sounds like a battery to me.

jeffrie
06-24-2008, 10:09 AM
12.0v even after 18 hours on 2 amp charge.
Suppose it's done with no dead cells *thmbsdwn*.

chromius
06-24-2008, 10:48 AM
yeah, 12.00V is a completely dead battery. I believe if memory serves me right an even 12V is about a 25% state of charge.

everlast
06-24-2008, 10:52 AM
Yeah, I think so too, 11.5V is the lowest you'll see before the process stops and it goes to zero.

With dead cells you lose a percentage right? Like if 1 of 6 cells is shot, then you would see ~ 10.4 volts with a working battery?

chromius
06-24-2008, 11:00 AM
Yeah, I think so too, 11.5V is the lowest you'll see before the process stops and it goes to zero.

With dead cells you lose a percentage right? Like if 1 of 6 cells is shot, then you would see ~ 10.4 volts with a working battery?

I believe you're right. a batt with a dead cell would never be reading 12V.

My guess would be your batt just won't hold a charge anymore Jeff, a load test would tell for sure though.