| Re: [GMCnet] Battery charging confusion [message #104972] |
Wed, 03 November 2010 18:08  |
jayrabe
Messages: 509
Registered: June 2009
Location: Portland, OR
Karma:
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Senior Member |
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Thanks Ken,
OTOH Handy Bob was pretty unequivocal that 14.8 for an hour or two before floating was the only way to get a battery 100.00% charged, & he quotes batt mfr specs to support that. Is he mistaken or just radically over-reacting?
J
76 PB
Portland, OR
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> 14.8 is a little high. Normal charging is between 13.8 and 14.2. You can get by at 14.8 for a short while IF the battery is cold and depleated enough. If you do not know the state of charge on the battery and have no way to monitor the state while while charging, I would not go that high. There is really no advantage to going that high other than an initial quicker warm up and slightly quicker charge.
>
> You are going to have to drop back to a lower voltage (13.6-13.8) once the battery starts gassing or gets too warm. When it is fully charged you will need to drop every further to about 13.2 as a maintenance charge of about 13.2.
>
> Note: On a fully charged room temperature battery you can go to 14.4 for very brief periods like 15 minutes or so without hurting it.
>
> I would not go to 14.8 unless you are going to sit there and watch it while it charges.
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
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