Battery life and demands on the nation's electric grid: your questions answered about the coming wave of electric autos.
Q. If a car goes 100 miles on a four-hour charge, do the batteries wear like other batteries? Do you get a little less range with every charge?
A. The new-generation lithium ion batteries about to hit the market have, in testing, held most of their charge for 100,000 miles or more. Chances are your car would break down before your battery would.
NEXT: Demands on the power grid
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