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post #8 of Old 06-20-2007
sailingdog
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Quote:
Originally Posted by hellosailor
Cam-
"Note that 12.25V measured in RESTING state is 1/2 discharged for a 12V battery. About 12.8V is fully charged"
SAY WHAT?! The normal resting voltage for a wet lead battery is six cells at 2.2VDC, total 12.6VDC. 12.8V is a "hot" battery with a surface charge on it, or a different internal chemistry.
12.5V is a 90% charged conventional battery, rated from 11.6V to 12.6V for the working range from "dead" to "full", typically and nominally. At least, that's what I keep getting repeatedly from a wide variety of makers and sources.
Hellosailor-

Actually, your math skills suck... 2.2 V x 6 = 12 (6 x 2) + 1.2 (6 x .2) or 13.2 Volts... Did you mean to say that the cells are 2.1 VDC each?? Six cells at 2.1 VDC would be 12.6 VDC total.

Sailingdog

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Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

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