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  ______    _____    ______     _____   __    __  
 /_   _//  |  ___|| |      \\  |  ___|| \ \\ / // 
   | ||    | ||__   |  --  //  | ||__    \ \/ //  
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 /__//     |_____|| |______//  |_____||    \//    
 `--`      `-----`  `------`   `-----`      `

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Text this: Energy management of portable power supply I