What is a quick charge smartphone?

Smartphones today are endowed with powerful “hardware” and a lot of various functions. One of them is the quick charge function. So far, it is used only on flagship devices, but in the future it will certainly appear on inexpensive smartphones. What it is?

Formally, the name of the function reflects its essence – the smartphone can quickly charge. To be more precise, it can charge faster than smartphones that are not equipped with a quick charge function. For example, the Huawei P30 with a 3650 mAh battery can charge up to as much as 50% in 30 minutes! Agree, the result is impressive. True, a full charge lasts much longer – more than an hour, but still the charge speed will be high.

Today, fast charging is supported by most processors. One of the leaders in this area is Qualcomm, it manufactures Snapdragon processors, which are used in many smartphones. Proprietary Quick Charge technology works only with the appropriate power adapter. If you use a different adapter, you can forget about the technology.

How does a smartphone charge fast?

Each device is designed for one or another current and voltage, that is, when charging, the device passes only a certain current.

Special adapters that are used in smartphones with fast charging support feature allow the device to accept more voltage and current. Thanks to this technology, the smartphone charges much faster.

True, there is one very important feature that must be taken into account. The fact is that the accelerated charging of the device is divided into several stages. At the very first stage, the maximum current is supplied, so the device’s charge literally grows before our eyes. However, upon reaching 50-70%, the current strength begins to decrease sharply, as a result of which the charging rate to the remaining 100% decreases. Why is this done? It’s simple – so that the battery does not overheat and does not fail. By the way, that’s why in advertising fast charging technologies say something like: “In just 30 minutes you can charge your smartphone up to 50%!”, Because up to the remaining 100% the device can be charged for another hour, or even longer.

It is clear that this technology allows to reduce the charging time of the device, which, of course, is a big plus. In fact, the main emphasis is on charging during the first 10-20 minutes. Example: your smartphone discharges, literally 5% is left. You run into the cafe, order coffee and put the device on charge, fortunately, the power adapter is with you. For those 10-15 minutes that you drink coffee, the device will have time to charge up to 35-50%, which is enough for the rest of the day. And, in our opinion, this is a huge advantage of this technology.

By the way, I would like to recall that there are a huge number of wireless chargers that support wireless charging. For example, Samsung EP-P3100:

And even external batteries with support for fast and simultaneously wireless charging, for example, Xiaomi Mi Wireless Power Bank Youth Edition 10000:

As for power, conventional chargers most often have power up to 10 watts. As an example, the quick charger that comes with the iPhone 11 Pro has 18 watts of power:

For one of the top flagships, OnePlus 8 Pro has a charger that has 30 watts of power:

And the Huawei P40 Pro received a charge of as much as 40 watts:

How to enable fast charging?

In general, there is no need to take any special actions – you just put your smartphone on charge. Of course, the power adapter must support fast charging – as a rule, in this case there is an inscription on its case like Quick Charge, for example:

The smartphone is charging as usual, no distinctive features are visible on the smartphone screen:

But Samsung smartphones, unlike most other devices, were able to turn off fast charging. To do this, go to the settings and select the “Device Maintenance” section.

Next – “Battery”.

Tap on three dots in the upper right corner.

And select “Settings”.

Now turn on or off quick charge.

But whether or not to do this, everyone decides for himself.