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I do not disagree with the figures - I'm just saying they choose the "best ones", and not the more realistic ones.

From wikipedia :

The nickel cadmium and nickel metal-hydride designs have efficiencies of around 66%.[43] However, modern lithium designs have almost negated this wastage as they can have efficiencies of around 99%.[44]

But are the latter batteries really available ? It may be more reasonable to assume a 66% yield instead. This is what I usually do. :) With the idea that it is possible to have a much better yield using "modern" design.

by Renard (scio at free point fr) on Fri Sep 14th, 2007 at 07:47:34 AM EST
[ Parent ]
Tesla (and many others) use Lithium-Ion batteries of course, expensive but best Wh/kg. The battery is usually the single most expensive component of EV, some vendor lease the battery.

The Modec van uses Zebra batteries with charge-discharge effiency above 90% (IIRC).


Even with NiMH AA batteries, 66% is near the absolute worst :).

by Laurent GUERBY on Fri Sep 14th, 2007 at 01:17:24 PM EST
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