Better Place also said Thursday that it plans to start building battery-exchange stations in California--its first U.S. destination--next year.

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Just don't expect longer battery life in exchange for a less svelte design.

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The latter wants a battery he can exchange when it becomes old.

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Obviously, the question remains how big of a trade-off there is on battery life in exchange for those two extra cores and the more powerful graphics chip.

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Look for the exchange starting at around 2:30, in which the two spar over the issue of battery life.

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