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1 .This is Scientific American's 60-Second Tech. I'm Larry Greenemeier. Got a minute?
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2 .Lithium ion batteries power everything these days from smartphones to electric cars.
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3 .They've been a great advance in portable power storage.
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4 .On the downside, their spread also makes a big contribution to electronic waste dumps often found in developing countries.
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5 .But IBM scientists in India may have come up with a way to decrease the numbers of discarded batteries while also bringing electricity to underserved parts of the world.
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6 .They developed an experimental power supply, called the UrJar, consisting of reusable lithium ion cells salvaged from three-year-old laptop battery packs.
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7 .For a study of the technology, the researchers enlisted street vendors who had no access to grid electricity.
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8 .Most users reported good results.
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9 .Several of them used the UrJar to keep an LED light going for up to six hours daily.
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10 .For one participant, the power supply meant keeping the business open two hours later than usual.
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11 .IBM presented its findings the first week of December at the Symposium on Computing for Development in San Jose, California.
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12 .The UrJar isn't ready for the market quite yet.
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13 .But it shows that one person's trash could literally light up someone's life halfway around the world.
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14 .Thanks for the minute, for Scientific American's 60-Second Tech. I'm Larry Greenemeier.
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