Charging Head

In the process of smartphone charging, the role of the charging head is to provide charging voltage and current for the phone, the general 5V/2A charger called ordinary charging head, this charging head does not have the ability to fast charging. A charging head that supports fast charging can not only charge the phone in general, it also needs to increase the output voltage or current for the corresponding model in order to adapt to the phone's built-in fast charging protocol.

Common fast charging protocols can be divided into three main categories, namely, low-voltage high-current, high-voltage low-current, and dynamically adjusted voltage and current. Assuming that the phone supports 9V/2A fast charging protocol, which is also known as high voltage and low current, if you use a 5V/4A (low voltage and high current) charging head to charge it, it will not be able to achieve fast charging because the two fast charging protocols themselves do not match.

So, when it comes to fast charging for cell phones, the charging head becomes the key to the problem. General charging head body will be marked with their own support for fast charging programs, such as 9V/2A, 5V/4A, 5V/6A, 10V/2.25A, etc., as long as the charging head and the phone support the same fast charging protocol, then fast charging for cell phones is equal to a large part of the success.

Data Cable

If the charging head is compared to a pump, then the data line is used to transfer the water pipe, the thick line of the pipe determines the size of the pump's final water output, the maximum current that can be carried by the data line determines the final effect of fast charging cell phones.

General standard data line can carry a maximum current of 2A, while the data line for fast charging needs to carry a larger current, such as 2.5A, 5A or 6A, which is mainly for the use of low-voltage high-current program fast charging cell phones.

For the use of low-voltage high-current scheme for fast charging cell phones, they are fast charging cell phones, charging head, data cable will simultaneously "handshake", that is, either the phone or charging head to match the other two parties, if the three can not reach unity, the charging head will not jump from 5V / 2A fast charging. The purpose of this is to ensure the effect of fast charging, on the other hand, is to avoid the fast charging process because the data line carrying current is too low and heat phenomenon, resulting in a short-circuit data line burned charging head or phone.

Finally, let us summarize together. Therefore, the smartphone fast charging in addition to the need to support the fast charging protocol itself, but also need to prepare its matching charging head and data cable, it is recommended to choose the original cell phone brand fast charging charging kit, only then can guarantee the fast charging effect and charging safety!