Re: (ET) Lithium-ion Battery

["Raymon R. Ellis" <raymon10 comcast net>]

According to your reference the Epoch System batteries may be produced in
2008 which could possibly power the Elec-Trak. I don't think I'll be able 
to
afford them. But thanks, David for the reference. There's heap of study
ahead.

-----Original Message-----
From: elec-trak-bounces cosmos phy tufts edu
[mailto:elec-trak-bounces cosmos phy tufts edu] On Behalf Of David Roden
Sent: Saturday, December 22, 2007 11:54 AM
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) Lithium-ion Battery

On 22 Dec 2007 at 11:43, Raymon R. Ellis wrote:

> What's so different about the
> lithium-ion battery? 

Lithium batteries are a hot topic of discussion on the electric vehicle 
discussion list.  If you'd like to learn more, you can get more info on 
subscribing at http://www.evdl.org/

FWIW, Valence makes a drop-in lithium replacement for marine batteries, 
called the U-charge, which several owners of Solectria Forces are using 
quite successfully. As I understand it, they come with built-in charge 
management system and require no special charger.  I don't think U-charge 
is

made in golf car size, but there's a 100 amp hour, 12v group 24 module, 
which will fit ETs.  Check with Valence to make sure they can be used in 
series-parallel before purchasing.  

However, cost will be a shop-stopper for most folks.  The Valence group 24
U-
charge batteries cost $1,500 >each<.


David Roden - Akron, Ohio, USA

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