> 13.51 refers to good battery, idling with the outside temp in the 80's.
> 14.25 refers to a weak battery that you just recovered from a no-start
> condition, and the outside temp in the high 40"s. We're pretty close.
> Regardless, 12.1 was pretty close to no-start. When I worked on that Isuzu,
> those batteries were at 11.91 the next morning and it was in no-start
> condition, just barely. Biff
>
> >
> >> CC charging systems put out between 13.51 and 14.25 volts, and that's at
> >> idle, with no other electrical load than the engine running.
> >
> > Again NBD, but my scanner shows mine (at highway speeds) putting out
> > 13.4-13.8, depending on..."whatever". Idle speed and stock vs.
> > under-drive pulleys may alter the "norm". That's why I generalized.
> >
> > Ray
> > http://www.dragtruk.com/ENTRIES/20KM1FD2KWBP.html
>
I had the battery tested last night at Autozne. When I got there after about 5
minutes of "city driving" the voltage at the battery was again 12.1V which I
was reading at home the night before. The "Cart" did its tests and results
indicated that it is OK, but weak. Had them check the alternator too and it
was putting out 14.3V and it was probably close 20°F at the time. That number
is good right?
I got a new battery (Duralast Gold 750 CCA $69 vs Red Top $180) but havent put
it in yet since I couldnt get the neg terminal loosened. Working on that soon I
hope but its too cold to be outside at night, single digits here! Tomorrow
should be a little warmer with temps in the mid 20's!! Man I miss California!
I got home and checked the voltage at the terminals again and it was 12.1 V
again. It seems pretty consistent at that value, FWIW.
Brian
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