Re: Race to build a better battery

Sorry, you need 100 kW-hr for 400 miles range, which is what you get
with a good gasoline-powered car. 50 kW-hr for 200 miles.

You can charge a second battery while you're driving around on the
first one. Swap batteries (not so simple if they weigh 500kg, though)
instead of recharging in 10 minutes. Say you fill up once a week,
that gives 7 X 24 = 168 hours minus one for charge transfer, 100/167
kW = 0.6 kW, about the same as the Low setting on a 110V space-heater.
If you're driving cross-country you would have to have battery-
exchange stations along the way, or perhaps limit yourself to 7 hrs.
recharging at the motel overnight.

Or do I have the figures wrong again?


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