1, this does not need to be opened in the mobile phone Settings, if you use the charging head and the corresponding cable, after plugging in, the mobile phone will automatically identify the charging mode into the super fast charge, take Huawei's super fast charge as an example, Huawei's super fast charge charger is 10V\/4A power supply. Compared with the ordinary fast charge 9V\/2A charger, the transmission current is twice that of the ordinary fast charger, so as to achieve the phenomenon of super fast charge;
2, in order to make the charger more intelligent, Huawei adds an IC chip in the fast charge, and this Huawei fast charge intelligent IC will monitor the current phone power in real time, and dynamically adjust the input current, to ensure that the charging process is not hot at low temperature, in line with the safe charging curve, so only the fast charge head and wire that support the super fast charge function can automatically open the super fast charge;