9V2a charger is 18 watts flash charge, but need the mobile phone to support flash charge function, if the mobile phone can only support 5V2A fast charge, do not support flash charge, it can not be used, but also may charge bad mobile phone or charger. The difference between flash charge and fast charge:
< br >
1, the charging speed is not the same, flash charging is faster.
< br >
2, the voltage is not the same when charging, flash charging is low voltage fast charging, fast charging is high voltage fast charging.
< br >
3, the heating degree of the mobile phone is not the same when charging, the flash charging temperature is low, and the fast charging temperature is high.
< br >
4, the security of the mobile phone is not the same when charging, flash charging is safer.
9v2a flash charge, that is, the charging voltage is 9v (volt), the charging current is 2a(amp), and the total charge is 18w(watt) fast charging.