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jef.vervoortw(at)telenet.
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 Posted: Wed Mar 24, 2010 1:58 am Post subject: Batteries |
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In september 2007, some messages promoted the use of A123 Systems batteries. They should offer a substantial weight saving.
Anybody heard of recent developments?
Jef, 91031 wiring.
[quote][b]
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nuckolls.bob(at)aeroelect
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| Posted: Wed Mar 24, 2010 10:32 am Post subject: Batteries |
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At 04:20 AM 3/24/2010, you wrote:
| Quote: | In september 2007, some messages promoted the use of A123 Systems batteries. They should offer a substantial weight saving.
Anybody heard of recent developments? |
The aviation battery manufacturing community is still
wrestling with li-ion battery technology for use as
starting batteries. I'm not aware of any wide-spread
usage. There are a few devices qualified to
the type certificate of some large air transport
category aircraft as standy-by power. I'm not
aware of anything even close to making onto a
single-engine TC aircraft or even jets.
Li-Ion technology energy densities are VERY high and
that "works-better-weighs-less" siren song is
seductive. But it's like trying to teach your engine
how to burn nitro-glycerine. Yeah, the energy is
there but keeping it from ever turning around to
bite you is no trivial task!
For now and the immediate future, SVLA is the king
of affordable and safe performance in batteries
for aircraft.
Bob . . . [quote][b]
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icrashrc
Joined: 16 Mar 2006
Posts: 247
Location: Mishawaka, In
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| Posted: Thu Mar 25, 2010 3:07 am Post subject: Re: Batteries |
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I have a fair bit of experience with A123's and yes, they would work fine for starting your plane, or your car.
I've used a 10oz [4 cell] pack to jump start a Rotax 912ul 4 different times this winter. All were at well below freezing temps.
I have a 16 cell pack ready to install in my 912uls powered plane when it's completed this summer.
LiFe battery packs are not as simple as just hooking up 2 wires. I doubt they will ever be mainstream until someone markets a complete drop in solution.
[quote="jef.vervoortw(at)telenet."]In september 2007, some messages promoted the use of A123 Systems batteries. They should offer a substantial weight saving.
Anybody heard of recent developments?
Jef, 91031 wiring.
| | - The Matronics AeroElectric-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Scott
www.ill-EagleAviation.com
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