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Lenovo K80M No power source or Off during boot

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Lenovo K80M  No power source or Off during boot: crwdns2935265:00crwdnd2935265:01crwdnd2935265:01crwdne2935265:0
  • The genuine battery was spot welded to each terminal in the red circle, but the battery was removed at first because it was considered defective.

  • Battery is OK and protection circuit is broken

  • Like the picture without the protection circuit DC 3.6V External power is input, so the phone operates normally.

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