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Wind Up Rechargeable Battery – power when you need it, your wrists when you don’t


The Wind Up Rechargeable Battery stores your kinetic energy for later use. Actually it’s perfect for those of us who can’t sit still. Just crank on this for a few minutes every now and then, and bingo, lots of spare power for the MP3 player or phone. OK, so 2 minutes cranking for 6 minutes talk-time is not stellar conversion rate, but it’s better than nothing. $39.99.

 Fully-charged, it can provide 2-5 hours of power for MP3 players, 5 hours of talk time, or up to 2 days standby time for a cell phone. Unlike other rechargeable batteries on the market, a built-in voltage regulator provides a constant 5V output and protects your gadgets from power surges. Takes 8 hrs to fully charge 600 milliamp battery using AC adapter. Powers most digital music players including iPods, handheld games, cell phones, PDA’s and USB powered devices.

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