Next message: MELVIN KNOTT: "Re: TWL: Parsimonious Willard owners"
Aren't most tests/determinations done at 20 amps?... thought I saw that
somewhere.
-Mel Knott
----- Original Message -----
From: Hal Wyman <>
Date: Monday, August 4, 2003 12:48 pm
Subject: TWL: RE: Battery specification
> Well, 390 minutes at 25 amps would be 25*390/60 amp-hours or 162.5
> amp-hours.
> 110 minutes at 75 amps would be 75*110/60 or 137 amp-hours.
>
> The reason these numbers are different is that battery capacity is not
> linear with load, i.e., if a battery will deliver 1 amp for 100
> hours it
> won't necessarily deliver 10]0 amps for 1 hour. Higher currents
> decreasethe total energy available from the battery. I believe
> batteries are
> generally rated at below 25 amps, so that the first number would
> be a
> conservative estimate of amp-hours.
>
>
>
> > -----Original Message-----
> > From:
> > [] On
> > Behalf Of Paul Goyette
> > Sent: Monday, August 04, 2003 5:51 AM
> > To: Trawler World List
> > Subject: TWL: Battery specification
> >
> >
> > This should be an easy one, but I can't seem to find the
> > answer online:
> >
> > How do you convert/calculate battry AmpHours from either of these:
> >
> > 390 minutes Reserve Capacity @ 25 amps
> > 110 minutes @ 75 Amps to 5.25V
> >
> > Just trying to figure out how many AmpHours in my GolfCart
> > batteries! _______________________________________________
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