Yes, Mi 67W gallium nitride charging head to charge iPad and iPhone, will not hurt the battery, mobile phone charging will match the appropriate charging protocol, downward compatible low power charging.
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If it does not support fast charging equipment, even with a variety of fast charging head and line, the device will not allow high power into the device, in addition, the charging head also has a variety of charging specifications, once the power does not go up, it will default to low power charging, with this dual guarantee, you want to fast also fast.