[I can't ask you anymore] Why is the quick charge of the smartphone so fast?

A "quick charge" function that is useful when you want to charge the battery of a smartphone or tablet in a short time. But are you really good at using the fast charge feature? If you don't have the correct knowledge, the charging speed may remain slow even on terminals that can be charged quickly .... This time, let's uncover the secret of the charging function of mobile terminals, which is unexpectedly unknown.

The point of quick charging is the amperage!

When you charge the battery of your smartphone or tablet, you know that you can charge it faster than usual by using the "quick charge" function that can charge the battery in a short time. However, it is not well known that even if a smartphone supports the quick charge function, it will not be charged quickly unless all the devices around the power supply support it.

The first thing to remember is the amount of current (ampere [A]) in USB chargers and mobile batteries. The higher the amperage value, the larger the amount of charge, and the faster the charging speed. In other words, even if your smartphone supports quick charging, it can only be charged at 0.5 to 1A if you use a mobile battery or USB charger that supports 0.5 to 1A. If you want to charge quickly, you need to use a product that supports 2A to 3A.

By the way, the USB terminal currently used in personal computers is a mixture of 2.0 and 3.0, but according to the standard, it is "0.5A" for USB2.0 and "0.9A" for USB3.0. If you want to charge quickly, you should avoid charging with a computer.