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RE: [VAL] Re: Batteriy capacity and refrigerators.



Rolls sells offers several 6v units with capacities at or above 300+ amphour
each.  When I made my statement about a 1000amphour battery bank, I was
assuming 3 pair of the 300+ amphour batteries. And yes I know that series
connection changes nothing as far as amphour capacity and that the watthour
doubled since the voltage doubled and amperage capability remained the same.
I was incorrect technically in using amp / hour notation.  I was attempting
to convey that the 15amp load of the 12v Dometic fridge taken over a 1 hour
period is a 15amphour drain and a solar array with a 9amp output over a 1
hour period is a 9amphour capacity and that that a deficit existed that
meant the difference was coming from the batteries at a 6amphour rate (ie
eventual discharge regardless).  Of course when the Dometic cycles off, the
entire solar output can be applied to the batteries, but in hot weather the
duty cycle is typically be considerably above 50% especially if the fridge
is being opened. 

david