I went with one PC680 and two alternators, and two busses including an
e-buss alternate feed path. I don't think you could run down the 17 ah batt
during a days soaring such that it would not crank the engine, unless you
run lights and everything while soaring.
I keep the battery in great shape by plugging into a maintainer in the
hanger, and changing the battery for a new one every two years. The used
battery goes into my subaru car for the next two years.
I also used the CCA fat (#4)wires to the rear mounted batt. to save some
weight.
Kevin
so far only short wings
----- Original Message -----
From: "Frans Veldman" <frans@paardnatuurlijk.nl>
Sent: Wednesday, April 01, 2009 6:42 AM
Subject: Re: Europa-List: Battery capacity
> <frans@paardnatuurlijk.nl>
>
> David Joyce wrote:
>> Frans, A single Odyssey 16 amp/hour battery has done me extremely well
>
> I have no doubt about this, but I'm looking for a way to save some
> unneccesary weight. 16 amp/hour appears a little bit "overdone" for me
> if one has two alternators on board. (I need two alternators anyway
> because the Rotax alternator/Ducati regulator will not reliably deliver
> enough power for my setup, so it is sort of logical to extend this
> proposition further into two fully separate buses for extra redundancy).
> Also, because I have two fully separate electrical busses, I will need
> two batteries as well, and carrying two 16 amp/hour batteries is really
> out of the question. ;-)
>
> A nice alternative could be two PC310 Odyssey batteries (each 8
> amp/hours) (thanks, Ron). This will give me 16 amp/hours in total as
> well, but divided over two fully separate systems. But without weight
> savings. :-(
>
> --
> Frans Veldman
>
>
>
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