it's probably the new LiFePo battery. Has 12.8 Volts and will handle 10
times the number of cycles of a Lipo.
I have found them only here til now (German dealer):
http://www.lipopower.de/shop/pages-main/category-149/linano-lifepo-fuer-elektroantrieb.html
<Thomas>
----- Original Message -----
From: "Frans Veldman" <frans@paardnatuurlijk.nl>
To: <europa-list@matronics.com>
Sent: Wednesday, October 01, 2008 9:19 AM
Subject: Re: Lithium Polymer start battery
> <frans@paardnatuurlijk.nl>
>
> craig bastin wrote:
>> <craigb@onthenet.com.au>
>>
>> I had heard they were available but hadnt been able to find any in
>> australia, I was looking
>> at the dry charge race car batteries which come in at around 1.5kg
>> 13.5volt
>> 7Ah with about 200CCA
>> cost is about $250 for them, which looks to be about the same as the
>> LI-PO I
>> must try harder to find
>> the LI-PO batteries out here.
>
> If it is 13,5 volt, it is not a LI-PO battery. Most likely it is a NiCd
> or something quite similar. They are difficult for aircraft use as they
> need a constant current charge, rather than a constant voltage charge.
>
> What I'm considering now is to use the 11.1 Volt LI-PO battery solely
> for starting the engine, and running the main fuel pump (Rotax 914).
> These are happy with this voltage. The rest of the system will run on
> the normal voltage as delivered by the alternator, backupped with a
> lead-acid battery. As the lead-acid battery is now only intended to be a
> backup for the avionics, and the backup fuel pump (914), only in case
> the alternator fails, it can be much smaller (thus lighter). This setup
> will save considerable weight, and add redundancy as well.
>
> Frans Veldman
>
>
>
