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| Ev Archive for August 2001 |
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| 1292 messages, last added Fri Aug 31 23:58:17 2001 |
[Date Index][Thread Index]
Re: Electric Vehicles List
On 31 Aug 2001, at 6:27, Justduckyno1@aol.com wrote:
> So what would likely be the price on NiCads?
About $550 per kwh. A typical 144v, 100ah pack (24 6-v modules) runs
somewhere in the $8,000 - $8,500 range. You also need a more
sophisticated charger and a cooling system (fans or a liquid system
depending on which module type).
Cycle life helps to make up for the cost -- it is rated at 2,500 to 3,500
cycles, around 4 to 7 times the life of lead batteries.
They are also appreciably lighter for a given amount of energy storage --
the best lead batteries yield around 36 wh/kg (watt-hours per kilogram),
and the nicads are around 55 wh/kg.
http://www.saft.alcatel.com/automotive/uk/datasheet/d2_2.htm
These are made in France by Saft, just about the only company making EV-
size nicads. They are the only affordable alternative to lead that I
know. NiMH and Lithium cost several times as much.
Nickel Zinc (Evercell) shows some promise. It has slightly higher
specific energy than nicad (they claim 60 wh/kg) and sells for slightly
less ($500 per kwh; a 144v 100ah pack would be $7,200). But at 600
cycles they can't even approach nicads' cycle life, so the cost per mile
is much higher.
There are a few list members using Saft nicads, though some of us were
able to get them used for somewhat less money.
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David Roden - Akron, Ohio, USA
1991 Solectria Force 144vac
1991 Ford Escort Green/EV 128vdc
1979 General Engines ElectroPed 24vdc
1970 GE Elec-trak E15 36vdc
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