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Competitive Electric Car Battery 5 Years Away, U.S. Energy Chief Says

* Batteries must raise energy storage by 5 to 7 times

* Battery race between US and Asia is on

By Timothy Gardner

CANCUN, Mexico, Dec 6 (Reuters) – Cars that run on batteries will begin to be competitive with ones that burn petroleum fuels in about five years, the U.S. energy secretary said at the annual U.N. climate talks.

“It’s not like it’s 10 years off,” Chu said at a press conference on U.S. clean energy efforts on the sidelines of the climate talks. “It’s about five years and it could be sooner. Meanwhile the batteries we do have today are soon going to get better by a factor of two.”

Chu is one of three Obama administration officials that will briefly visit the talks among 190 countries being held at a Mexican beach resort through Dec. 10. Agriculture Secretary Tom Vilsack and Nancy Sutley, the head of the White House’s Council on Environmental Quality, are the other two.

Chu’s Department of Energy, or DOE, is supporting several approaches seeking to improve car batteries. A battery race has developed between U.S. companies like Massachusetts-based A123 (AONE.O) and ones in Asia, like China’s BYD (1211.HK), which Warren Buffett’s Berkshire Hathaway owns 10 percent of.

South Korea’s LG Chem (051910.KS) is supplying General Motors GM.UL with batteries for the automaker’s electric Volt car.

Petroleum-powered transportation emits about a third of the world’s greenhouse gases. Scientists say battery-powered cars reduce emissions of carbon dioxide, even if they are powered by coal-burning power plants. As more natural gas-fired plants are built, they will become even cleaner.

Right now electric cars do not go as far as ones powered by internal combustion engines, which could limit sales if there are no improvements.

Even so, GM said last month it is stepping up production of the Volt to meet “huge demand,” without giving details. GM had planned to build 10,00 Volts in 2011 and 45,000 in 2012.

Chu said car battery companies have to develop units that last 15 years, improve energy storage capacity by a factor of five to seven, and cut costs by about a factor of three in order to be make electric cars comparable to cars that run on gasoline and diesel.

While the technology may improve, it is not certain that there will be ample materials to build the batteries to support a massive move to such cars.

BYD is looking for new sources of lithium, an important ingredient in advanced batteries. Lithium supply is expected to be tight by 2050 if drivers give up their cars and go for battery-powered cars, according to a European Commission study of raw materials for high technology goods.
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