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Date:         Tue, 12 Feb 2008 07:30:33 -0800
Reply-To:     Paul Guzyk <paullist08@GUZYK.COM>
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         Paul Guzyk <paullist08@GUZYK.COM>
Subject:      Re: What is THE best battery ?  Firefly?
In-Reply-To:  <E8FD6162-09ED-45E9-B59D-F38AA6F8DD65@dragonhome.org>
Content-Type: text/plain; charset="us-ascii" ; format="flowed"

This was posted on another list I subscribe to:

>Firefly now has a video out on their new battery: > > http://www.fireflyenergy.com/OasisVideo/index.html > >The video claims 4x the cycle life under deep discharges, 3x faster >recharge, and 45% more energy compared to conventional lead acid. >They also say the battery has 65% of its juice at -20C temperature. > >The 3x faster recharge hints at low resistance. Unfortunately, these >batteries are not any lighter than other group 31 batteries. They >say the carbon foam electrode is sulfation resistant, hence the >longer battery life. > >Intriguing on the spec page is a footnote reference to testing being >based on a "25 Ahr high power battery." Hopefully that comes out, >that could be quite a battery for a light and quick EV at a good >price. > >This battery is still vaporware for the general public at this time, >but since Firefly is a subsidiary of Caterpillar I have more hope >than usual. > >Disclaimer: I do own some Caterpillar stock (FWIW, I also own stock >in several other EV related companies but have never posted about >them.). >


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