Of course, it is 5v2a such ordinary fast charging head specifications, higher charging mode is twin engine 9v2a18w, or a higher level of turbo fast charging, with a 12v1.5a the same 18w function, and common flash charge 5v4a 20w.
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Check the injection power, voltage and current values marked on the charging head of the mobile phone. By checking the charging head identifier, you can see that the charging head is 5V and 1.2A.
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In general, the charger has a clear model identification. If the charger is unlikely to be a counterfeit product, in addition, the original charger is the best way to charge the phone, otherwise it will cause damage to the phone and serious explosion of the battery.