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Power Storage
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81 USB Chargeable Batteries Philip Proefrock 27140
82 Fuel Cell to Power Portables 25538
83 Switching from Batteries to Portable Power Generation Philip Proefrock 22032
84 300 Watt-Hours per Kilogram! Hank Green 27285
85 Plastic Battery: Instant Recharge Hank Green 26163
86 Intventor of LEDs Wins Millenium Prize Hank Green 20839
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