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From: "rijakits" <rijakits@cwpanama.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-1062852@logan.com>
Subject: Re: [FlyRotary] State-of-the-art airplane battery
Date: Sun, 9 Apr 2006 10:28:02 -0500
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Bill,

you say 10 years - how are you so sure it will hold?
I am living in a hot/humid country - I need a new car battery every 2 years,
like clockwork - sealed/no-maintenance battery.
In the "old world" (Central-Europe) a regular car battery would last at
least 4-5 years (no I have no comparrison, as back then ALL batteries where
"maintenance" batteries - however keeping the liquid level with distilled
water was all that was needed)
I just changed the bat again - from first sign (slight hesitation at start)
to "death" was 2 days...
At a rate of 40.- per battery I probably keep changing them, but I guess for
"weight-fanatics" it seems a cheap way to loose some.
I am just a bit sceptic on the 10 years.
Someonoe asked already - what's the tech behind this? In laymans terms
please :))

Great website!!

Thomas J.


----- Original Message ----- 
From: "BillDube@killacycle.com" <billdube@killacycle.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Saturday, April 08, 2006 10:47 PM
Subject: [FlyRotary] State-of-the-art airplane battery


> I know this is a bit off topic, but we rotor heads like to try the
> latest and greatest stuff.
>
> I am considering producing state-of-the art, very lightweight, ultra
> long life, starting batteries for experimental aircraft. They won't
> be cheap to make, however. I'd like to get some feedback as to the
> market for these before I put a big effort into this.
>
> Here are the specs:
>
> 14 volts
> 480 cranking amps
> 8.8 amp-hours
> 2.7 pounds (Yes, that is right.)
> 10 year warrantee (prorated)
> Completely sealed battery
> Safer than lead acid or NiCad
> Built-in electronic monitoring system warns of over-voltage,
> under-voltage, over heating, or internal battery fault.
>
> That is all the good news. The downside is that they will cost about
> $475. I'm not sure how many folks would want a 10 year battery (at
> least) that weighs about 1/3 as much as an "ordinary" battery, but
> costs four times as much.
>
> The specs above are real. I have personally tested these batteries
> and they do, indeed, perform this well, so that is not an issue. I
> know I can make these. I'm going to make one for myself. The question
> is, will folks buy them if I produce them?
>
> Let me know if you think you would be interested in such a high-tech
> battery at this cost.
>
> Bill Dube'
>
>
>
>
>
>
> --
> Homepage:  http://www.flyrotary.com/
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