Fast charging can not be used as ordinary charging, can not achieve the effect of fast charging, the two fast charging schemes are not the same.
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Two differences:
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1, the charging power of vivox9 is 5V\/4.5A, the charging power of oppo is 5V\/4A, there is a little gap between the two.
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2, in terms of charging principle, vivo has always used a 9V\/2A scheme, which belongs to the way of high voltage and low current, and oppo's use belongs to the \"low voltage and high current fast charge\
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3, in terms of charging technology, vivo dual engine flash charge is vivo's exclusive charging technology, which is twice as fast as the ordinary charging method, and adopts a nine-fold charging protection system to provide a more assured charging experience.
If your ViVO mobile phone manual allows fast charging of the mobile phone is OK, otherwise do not use fast charging, there will be danger.