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Power Storage
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81 USB Chargeable Batteries Philip Proefrock 27062
82 Fuel Cell to Power Portables 25450
83 Switching from Batteries to Portable Power Generation Philip Proefrock 21972
84 300 Watt-Hours per Kilogram! Hank Green 27204
85 Plastic Battery: Instant Recharge Hank Green 26070
86 Intventor of LEDs Wins Millenium Prize Hank Green 20759
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