1, charging head problem: it may be that the charger power is not applicable to the Red rice K60 supreme version, low power is not fast charge.
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2, data line problem: fast charge & Super fast charge has certain link requirements, such as the charging cable requirement is 5A (the charging cable is aging or seriously worn out), and a new data cable can be replaced.
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3, interface problems: may be due to the red rice K60 supreme version of its own charging port poor contact.
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4, battery problems: May be battery damage (such as aging) resulting in slow charging.