Do you use fast charging? How long does it take for you to fully charge your phone?

eric_wang

Do you use fast charging? How long does it take for you to fully charge your phone? [Copy link]

Nowadays, "five blessings and one safety" has become history. Now when people charge their mobile phones, they all use fast charging, right? How long does it take you to fully charge your mobile phone?

The fast charging function of mobile phones is really something you can never go back to. At that time, charging for 5 minutes gave you 2 hours of talk time. How advanced is fast charging technology today? Let's learn about Qualcomm's QC 5.0 fast charging technology!

From last year to now, many manufacturers have promoted 65W fast charging technology, and 100W or even 120W fast charging technology has also been released. Now Qualcomm has also joined the super fast charging camp. Recently, Qualcomm announced the launch of Quick Charge 5 (QC 5.0 for short) charging solution, 100W+ power, 50% full in 5 minutes.

Although there are more and more fast charging methods for smartphones, many manufacturers have switched to their own private protocols, which has left consumers at a loss. Currently, in addition to the USB PD standard fast charging on the market, Qualcomm's QC series is still good in terms of compatibility and popularity, but the power of QC 2.0 to QC 4.0 is only 28W, and it has been released for more than 4 years and is already outdated.

This time, QC 5.0 can be said to be an all-round upgrade. First of all, the fast charging power has been increased to 100W+. It is known as the first commercial fast charging platform with a charging power of more than 100W in smartphones. It can charge from 0% to 50% in 5 minutes, and the charging efficiency is increased by 70%. The speed is 4 times that of the previous generation.

In addition, QC 5.0 fast charging also supports dual charging/triple charging technology, adaptive input voltage, fourth-generation optimal voltage intelligent negotiation (INOV4) algorithm, Qualcomm Battery Saver battery health management, and the new Qualcomm adapter power intelligent identification technology. These technologies not only improve charging efficiency, but also enhance safety and extend battery life. The temperature is 10 degrees lower than QC 4.0.

In terms of compatibility, QC 5.0 is backward compatible with QC 2.0/3.0/4.0, and it also makes full use of USB PD and USB-C technologies and is compatible with USB industry standards.

In order to match the QC 5.0 fast charge, Qualcomm also launched a new generation of power management chips - Qualcomm SMB1396 and Qualcomm SMB1398. By supporting 1SnP and 2SnP batteries, dual-channel wired and wireless charging, adaptive operation based on power input (3-level Buck and DIV/2), and scalability (using master-slave architecture to provide higher power), these two chips are designed to achieve a maximum charging efficiency of more than 98%.

Not only that, they also support input voltage working mode above 20V to adapt to the highest power of wireless and wired charging input. Currently, these two chips have been released and started shipping.

Qualcomm said that QC 5.0 fast charging is being sampled to customers and is expected to be available with commercial terminals in the third quarter of 2020. Supported platforms include Snapdragon 865, Snapdragon 865 Plus and future top and high-end Snapdragon mobile platforms - this is a strong hint of Snapdragon 875, which is expected to become the standard configuration of the new flagship next year.

As for which mobile phone manufacturer will be able to launch the product first, it is still uncertain. However, the official document includes a statement from Zhang Lei, vice president of Xiaomi mobile phones and general manager of hardware R&D at Xiaomi, so this question is not difficult to guess.

jpf

Awesome

chunyang

Fast charging is good, after all, it is convenient. I use fast charging occasionally, when I need to use my phone but the battery is seriously low. In most cases, I use "super slow charging", that is, charging it through the USB port of the computer, or the USB on the front panel, and the charging current will not exceed 500mA. Anyway, I don't play with my phone often, so doing so is actually more power-saving and environmentally friendly. My computer power supply is copper-grade and has a higher efficiency. Although this is the case most of the time, fast charging is still needed. There is always an emergency time, and the advantage of fast charging comes out.

led2015

In the infinite imagination, a few minutes of fast charging can be used for several hours, which is really scary, but I always think that fast charging is only for emergency situations, and I am always unwilling to rest assured