Ecotality Inc, a maker of chargers for electric cars, said it may need to file for bankruptcy after failing to increase sales, sending its shares down as much as 84 percent.
If Ecotality files for bankruptcy, it will join a long list of U.S. alternative-energy companies that have fallen by the wayside.
Consumers have been slow to gravitate toward electric vehicles (EVs) because of their high cost and restricted driving range.
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