No matter how much you bought your smartphone — charge it every day, unless you have a Nokia 3110 or a device with a monstrous battery 9 000 — 10 000 mAh. So we already relate to charging how to clean teeth, however the time it takes much longer. But there is a way to make the procedure as quickly as possible — for this there is a Quick Charge and other similar technologies.
Modern flagships with a battery at 3,000 mAh allows to charge from 0% to 80 % in just 30-35 minutes, and someone makes it even faster. Fairy tale in reality embodied Qualcomm, for several years produces chips compatible with the fast charging technology Quick Charge.
It all started five years ago — in 2013, several dozen smartphones first got technology support Quick Charge. It allowed for 40 % faster charging. But a year later engineers has announced the second generation QC — together with the processor Snapdragon 800.
Due to a fast charging
The current capacity of lithium-ion batteries depends on the imagination of the manufacturer — it can be as 1 500 mAh, and 9,000 mAh. For such a nominal battery voltage varies in the range of 3.5 — 3.7 V and the maximum reaches 4.2 V.
The process of charging the battery of the smartphone consists of two stages. Primarily the device is charging a large capacity of current until the voltage reaches a threshold. After that, the charge current decreases until the battery is fully charged. Charging ends when the amount of the charging current is reduced to 3% from the initial value. So the battery is not rechargeable, there is a special controller.
Quick charging is the transfer of the current maximum possible power from the charger in the first stage of charging. Qualcomm, for example, developed technology evenly with Quick Charge 1.0 had the characteristics of 5V/2A, the whole process was carried out up to 40% faster. QC 3.0 received the support of INOV — technology of intelligent voltage selection, which also speeds up the replenishment of the charge. The main “trick” — the selection of the voltage individually for each device (from 3.2 volts up to 20 volts). It is supported by many modern smartphones — Xiaomi Mi MIX 2, U11 HTC, NOKIA 6, LG V30+ and others.
But the Quick Charge version 4.0 allows you just five minutes to charge a smartphone so that it will be enough for five hours of operation. However, now only one in the world the smartphone has support — phone gaming Razer Phone. Eventually it will join LG G7.
Not only Quick Charge
Because royalty payments many Qualcomm has launched an alternative solution Quick Charge. For example, OnePlus has Dash Charge, and the Pixel uses Google’s USB-PD. Many smartphones are used TurboCharge, FastCharge and other similar technologies that essentially work on the same principle as the standard from Qualcomm.
Chip maker Mediatek is also not left behind — he has developed technology Pump Express. Its third iteration can charge your smartphone from 0% to 70% in 20 minutes! The remaining power device “glean” for another half hour. Standard support got Meizu Pro 7 and number of other devices. Provides protection against overheating and USB support-C. the Feature of this technology is that when charging a standard internal circuit is not affected, the current goes directly from the adapter to the battery.
And is it safe?
When it comes to this issue, many of us remember the sad experience of Galaxy Note 7, but there likely was a high percentage of defects of the battery, and aftermarket charger adapters played a role. But the question is still controversial.
At the moment researchers rely on existing tests of batteries, and agree that the battery life in the mode of constant rapid charging, drops. But if you quickly charge your smartphone too often, the consequences for the battery would be negligible.
What to charge?
Of accessories that support the same Quick Charge 3.0 on the market a lot. Complete with matching smartphones typically supplied with power adapters, but the technology exists and some external batteries. For example, BURO external battery 13 000 mAh. However, if there is a need for another power adapter with fast charging, it is possible to purchase it.
Of course, should not abuse quick charging, but you cannot pass such a convenient way to save time. A constantly charging their smartphones with Quick Charge and other technologies, and, over time, the wear of the battery is obtained the same as in conventional charging adapters.