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1 .This is Scientific American 60-Second Science. I'm Christopher Intagliata. Got a minute?
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2 .More than half of all Americans carry smartphones.
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3 .Smartwatches and smartglasses may not be far behind.
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4 .What's not all that smart are the rigid batteries that power our gadgets.
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5 .But some may soon be replaced by ultra-thin, flexible batteries, sewn right into your clothes.
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6 .Researchers built a prototype out of conductive, nickel-coated polyester fabric.
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7 .They applied lithium compounds to create the anode and cathode, and separated them with a spandex-like material.
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8 .The finished battery was just half a millimeter thick, with a capacity of 510 milliampere-hours per cubic inch, about a quarter that of the battery in an iPhone 5.
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9 .And the tighter the knit, the higher the capacity.
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10 .Of course, fabric wrinkles.
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11 .But this battery can too.
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12 .Even after being folded 5500 times, the battery kept trucking.
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13 .Thin foil batteries, on the other hand, took just 70 folds to become really foiled.
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14 .The findings appear in the journal Nano Letters.
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15 .You don't even have to disrobe to charge this wearable battery.
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16 .Researchers tacked flexible solar cells to it, so it can charge on the go.
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17 .May be just the thing to make polyester current again.
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18 .Thanks for the minute, for Scientific American 60-Second Science. I'm Christopher Intagliata.
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