RE: New battery technology?

["Humphrey, Timothy" <HumphreyT@neads.ang.af.mil>]

RANGE!

At 50 Wh/kg that puts them close to equal with advanced NiCd. NiCd and NiMH
have all been tried by the OEM's (manufacturer of Consumer Ev's) and
determined(by them) to be lacking in range for the price.

The OEM's won't be happy until they can get a battery with a range of 400
miles and 10 minutes to recharge all at a cost of less than 3k. Of course if
that should ever happen then they'll change their requirements.

Stay Charged!
Hump



-----Original Message-----
From: Lonnie Borntreger [mailto:ev@borntreger.com]
Sent: Tuesday, September 24, 2002 3:59 AM
To: Evlist
Subject: Re: New battery technology?


On Mon, 2002-09-23 at 23:45, David Roden (Akron OH USA) wrote:
> Standard lead acid	25-30 Wh/kg
> Advanced lead acid	30-36 Wh/kg
> Standard nicad		25-40 Wh/kg
> Advanced nicad		50-55 Wh/kg
> NiMH 				65-85 Wh/kg (Ovonics claims 90 for some)
> Lithium Ion			100-150 Wh/kg (AES claims 120)
> Lithium Polymer		150-200 Wh/kg (Electrovaya claims over 200)

So then why would they say that it has to get to 50Wh/kg for it to be
viable for consumer EVs?  It seems that 25-35 puts it equal with some of
the technology, and the "refueling" feature seems to give it a leg up. 
Although, they never mention purchase/manufacture price, so if that is
too high, then it has to compete with the capacities of the more
expensive batteries.

I wish battery technology advancements moved ahead at the same pace that
computer technology does, instead of this "wait ten years for something
to happen" pace.

Lonnie