The next generation of batteries--so-called lithium-polymer batteries--due in mass quantities sometime around the turn of the century, should extend that even longer.

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Lithium polymer batteries, for example, have allowed a little more flexibility in the design of a notebook.

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Powered by 2-cell lithium polymer rechargeable batteries, the detachable wireless satellite speakers offer up to 10 hours of non-stop playback and can be easily recharged by connecting them back to the main unit.

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Nor does it reflect production costs for the Volt, which has expensive technology including lithium-polymer batteries, and sophisticated electronics, plus an electric motor as well as its gasoline engine, Reuters says.

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The best scenario for Boeing is that the problem -- centered on two powerful lithium-ion polymer batteries -- is isolated.

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Phones also run several kinds of batteries, ranging from lithium ion to lithium polymer to Nickel Metal Hydride (NiMH).

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