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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