Worth checking prices, but I found that a single, high quality, 12V battery
cost no more than one 6V battery. Since you know you need to replace at
least one 6V battery, you might as well spend the same money and buy a 12V
instead, unless originality matters a great deal to you.
Richard & Sammy ('73 Black Tulip BGT)
2009/5/25 Richard Ewald <richard.ewald@gmail.com>
> A fully charged battery produces 2.12V per cell. 12.72 V for a 12V
> battery,
> 6.36V for a 6 volt battery. Charge them up overnight, then disconnect the
> charger and wait at least 4 hours to dissipate the surface charge. Or if
> you are in a hurry turn on the headlights for 30 seconds.
> Disconnect the batteries and measure the voltage individually. You will
> probably find one battery is quite a bit lower than the other.
> Then go buy a couple of new ones or convert to a single 12V.
> Rick
>
> On Sun, May 24, 2009 at 7:54 PM, oliver <sumton@sbcglobal.net> wrote:
>
> > it seems that after pulling the engine/tranny and replacing the clutch, i
> > have
> > new woes to deal with. the car was out of commission for 2 or 3 months
> > (various things kept getting in the way), and now i seem to have lost one
> > or
> > both of the batteries. yes, i'm still running two 6 volters, and i know
> i
> > should replace them with a single 12, but i figured while they were
> working
> > i
> > would leave them.
> >
> > after charging them overnight, in series, i still didn't have enough
> juice.
> > i
> > added a 12 volt with jumpers and the car started right up. so clearly
> i've
> > identified the problem.
> >
> > i am charging them again tonight just to be sure.
> >
> > can someone tell me how to identify which battery is bad or if they have
> > both
> > finally quit? using my multimeter across the pair (both 6 volters) i
> get
> > 12
> > volts. i suppose i could pull them and trundle off to sears to have them
> > checked.
> >
> > they were in the car when I purchased it in December of 2004, so they are
> > at
> > least 4 1/2 years old. is it time???
> >
> > thanks!
> >
> >
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