Correct. But it's the end benefit/result (distance per unit of energy and
cost) which will determine what the public will use and buy. As battery
technology improves, the hybrid will fade away slowly, but not for trucking
and buses.
Stan Doore
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: "U.S. Metric Association" <[email protected]>
Sent: Wednesday, June 18, 2008 12:59 PM
Subject: [USMA:41170] Batteries for Electric Vehicles
Stan,
Battery parameters; energy stored, mass, and volume are *all three*
important determinants of electric vehicle range and economy. The "energy
mass density" (J/kg) and "energy volume density" (J/m^3) limit the range,
economy and cargo space of electric vehicles.
Lead-acid batteries, for example, are much inferior in both J/kg and J/m^3
than the lithium-ion batteries currently under development and beginning
to be employed. e.g. Read about the Tesla, providing excellent
performance in acceleration and range, but still very expensive, 100 + k$.
Gene.
---- Original message ----
Date: Wed, 18 Jun 2008 09:50:57 -0400
From: "STANLEY DOORE" <[EMAIL PROTECTED]>
Subject: [USMA:41167] Re: Prius vs. Insight
To: "U.S. Metric Association" <[email protected]>
It's not the mass of batteries vs. other forms
that's important, but the end result of electrical
propulsion - more equivalent miles per gallon of
fuel per unit of energy.
Stan Doore
