The fast charging voltage is 9V.
< br >
To realize the fast charging function on the mobile phone, three elements need to be met, and all three are indispensable. Charger, battery, charge IC. The charger needs to meet sufficient output current and output voltage.
< br >
Because the charger line has a large parasitic resistance, if you want to achieve a large charging current, the on-load output voltage of the charger needs to be high.
Generally, the voltage of fast charge is nine volts, the output voltage of the mobile phone charger is five volts, which is larger than the general standard electrical appliances, and the main way to achieve fast charge is to have a charging head, which is the most basic
The specifications of the original charger are 5v, 1a, power 5w, the maximum support of 5v, 2.4a (that is, 12w power, which is the charger equipped after the ipad4 generation) to achieve faster charging, you can use this mobile power charge completely no problem