發送短信 : Lithium-ion (Li-ion) battery state of charge estimation

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