All the flagship ships in the first half of 2018 have been launched. Looking back at the Android flagship in recent years, not only has its endurance become stronger, but many manufacturers have introduced new fast charging technologies. The core of this comparison is to look at the status quo of the current flagship in terms of endurance and charging.
The contestants include OPPO Find X Standard Edition, Samsung Galaxy S9+, Xiaomi 8, One Plus 6, Nut R1, and iPhone X and iPhone 8 Plus, which are shown here as the reference line for comparison.
Endurance test
There are many factors that affect the battery life of mobile phones, but three factors play a decisive role: battery capacity, screen size and material, SoC and tuning:
Among the contestants, the battery capacity from high to low is OPPO Find X Standard Edition (3730mAh), Nut R1 (3600mAh), Samsung Galaxy S9+(3500mAh), Xiaomi 8 (3400mAh), One Plus 6 (3300mAh), iPhone X (2716mAh) and iPhone 8 Plus (2675mAh).
The most unexpected battery capacity is the Find X, which has a 3730mAh battery besides the dual track periscope structure. In addition, the battery of iPhone X is actually larger than that of iPhone 8 Plus.
The diagonal length of the screen from large to small is OPPO Find X Standard Edition (6.42 inches), Galaxy S9+(6.2 inches), One Plus 6 (6.28 inches), Xiaomi 8 (6.21 inches), Nut R1 (6.17 inches IPS), iPhone X (5.8 inches), iPhone 8 Plus (5.5 inches).
It should be noted that their screen proportions are different. Except that OPPO's screen area is significantly larger, and iPhone 8 Plus and iPhone X are significantly smaller, the screen area gap of other mobile phones is small. In terms of materials, only Nut R1 and iPhone 8 Plus are LCD screens. Under the same conditions, their daily power consumption is slightly higher.
The SoCs are all Snapdragon 845, and the main gap lies in the training, while the active and conservative training correspond to the speed and endurance respectively. The most active Snapdragon 845 models are Galaxy S9+and Nut R1, while the frequency tuning of Find X, One Plus 6 and Xiaomi 8 is relatively conservative and more durable.
We unified the brightness of 100 nits at room temperature of 26 degrees, simulated the daily indoor use and conducted a 2-hour endurance test. It includes 30 minute large-scale games (NBA 2K15), 30 minute local video playback, 30 minute wifi and 4G Internet access respectively. The test results show that as long as the manufacturer does not dig a hole, the endurance of the Snapdragon 845 model is difficult to roll over, and the difference between different models is small. The final difference of the two-hour endurance test is only about 3%.
During the endurance test, many factors such as power consumption control of the screen and SoC tuning were mixed. Users who prefer games, web browsing and videos can focus on the power consumption of small projects according to their daily use. For example, for the Internet part with the smallest gap, most machines consume about 3-4% of electricity. However, if you are a heavy user such as microblog and post bar, the 1% gap here will be expanded by N times, which is something we should pay attention to.
Charging test
Everyone has the impression that endurance is endurance, and charging is charging. But in fact, the battery life and charging are one and two sides, which cannot be separated. There are only two major directions to solve the generalized "endurance" problem when the processor, screen and other aspects remain unchanged. First, improve the duration of single use. The main solution is to stack batteries, which can be used for a longer time after a single charge. However, the large battery means that the body is heavier and charging is slower, which is the main reason why mainstream mobile phone batteries stop below 4000mAh.
The second is to improve the charging speed. After the design of replacing the battery was canceled, fast charging became the only solution. For a long time, Qualcomm QC fast charging almost unified the Jianghu, but after years of continuous squeezing of toothpaste, all mobile phone manufacturers spontaneously began to develop their own fast charging schemes, making the charging scheme split again:
The most special and earliest one is OPPO's VOOC flash charge. In 2014, when the flagship of mainstream Android was still charging with 5V 2A, Find 7 launched the first generation VOOC flash charge, which directly doubled the power to 22.5W (5V 4.5A). Advanced charging technology and OPPO's slogan of "charging for five minutes, talking for two hours" are important contributors to the popularity of the concept of fast charging in China.
Contrary to the low voltage and high current scheme of VOOC flash charging, Qualcomm QC2.0 released in the same year is a high voltage and low current scheme. Its advantages are low requirements for wire rod and lower cost. Its subsequent popularity also brings advantages in versatility.
However, the subsequent Meizu mCharge 4.0 (5V 5A), Huawei SuperCharge (4.5V 5A), and Vivo's dual engine flash charge (5V 4.5A) in X9 Plus and X20 Plus have all changed to a low-voltage scheme similar to VOOC flash charge.
Unfortunately, the low-voltage scheme has not yet been unified. Now, most of these fast charges above 20W can only work with official charging heads and data lines. The only exception is the VOOC flash charge of OPPO and the DASH flash charge of Yijia. Because the Type-C interface is used on OPPO Find X this year, their charging heads and charging lines can be universal and mixed.
However, wireless charging, which has gradually become popular, still belongs to the category of "itchy point innovation" in the eyes of the author because of the charging speed. Even if it is wireless "fast charging", it will take more than 3 hours to fully charge. Although it can be discharged and charged at the same time, it is also easy to neglect the charging opportunity. It is often necessary to wait until going out to find that the power is charged a little. Once you step through the pit, you will find that the convenience brought by wireless charging is not enough to provide a sense of power security
Back to this test:
In this comparison model, the most conservative charging specification is Samsung S9+. Although it supports multiple standards such as QC2.0, AFC and PD at the same time, Samsung is very conservative in charging after the Note7 accident, and its actual power is only about 12W;
Xiaomi and Nut R1 support QC4+at most (but Xiaomi's official configuration only has a QC3.0 charging head, but fortunately, the charging power of the two charging heads are not different). Xiaomi can reach 18W at most, while Nut R1 can reach about 17W at most;
OPPO Find X Standard Edition and One Plus 6 are both 5V 4A and 20W. Come to think of it, VOOC flash charging should have the low-voltage fast charging scheme with the largest shipment volume;
The iPhone 8 Plus and iPhone X are the first time Apple phones have used fast charging in many years. Their goal is very simple, that is 50% charging in half an hour. In terms of actual charging power, the MBP charging head for iPhone X and iPhone 8 Plus can reach a peak of 18W. Although it is significantly improved than the previous slow charging, it is still hard to raise its head in front of Android flagship;
In addition, S9+, iPhone 8 Plus and Nut R1 support wireless charging, which can make up for the charging performance.
However, it should be noted that the peak power of charging can only indicate how fast a mobile phone can charge at its maximum speed. However, the cell phone's battery C number (charging speed), changes in charging power and temperature, and the duration of trickle will affect the charging speed.
Curve of charging nodes in the previous hour
Charging node data sheet (focus on the charging speed in the first hour)
Charge 5% - 100% at 26 ℃. What should be noted here is that the most important thing is the speed of the first hour when looking at the charging data, which is of greater practical significance. A small number of mobile phones, such as S9+, can be charged earlier by significantly reducing the duration of trickle charging, although fast charging is slower.
In the first hour of charging, the one plus 6 and Find X standard version have the fastest power growth. The second tier is Nut R1, Xiaomi 8, S9+and iPhone 8 Plus. After considering the battery capacity:
The first echelon is still Find X Standard Edition and One Plus 6. Their most prominent advantage is their speed in the first 30 minutes, far away from other mobile phones, and their perception in daily use will be very obvious.
The nut R1 of the second echelon was very fast in the first 15 minutes, but the speed dropped significantly when the power was above 30%. The overall speed of S9+and Xiaomi 8 is average, but the former can maintain output all the time, while Xiaomi 8 comes from the trickle later, so the final result is close to that of nut R1.
For the iPhone, the battery capacity is small. Even though the actual charge is at the bottom of the whole process, the percentage of charge is not much behind.
Finally, there is a hidden factor. Although the overall endurance performance of the standard version of OPPO Find X is very good, there are also super flash charging and Lamborghini versions of Find X, whose charging speed is insurmountable. Its SuperVOOC super flash charging technology doubles the charging power directly to 50W, and it only takes 35 minutes to fully charge a mobile phone.
This is the largest charging power among mass produced mobile phones in history, and has more than doubled the mainstream 18W fast charging power. Its leap forward range is comparable to the VOOC flash charge of 10W. What is this concept? The standard version of Find X is fast enough, and it needs to be accelerated to more than twice. It can charge nearly 40% of the power in 10 minutes. If you wake up and see that the power turns red, you can hold on to it for most of the day with a quick charge between washing and brushing. It's exciting to think about this experience.
summary
According to the comprehensive endurance and charging test, although the screen size and battery capacity are different, the Snapdragon 845 model does not have a big gap. At this time, the fast charging machine will be very popular. In addition to the Find X super flash charging version and Lamborghini version that can fill a mobile phone in 35 minutes, the Find X standard version (the fastest mAh charging in most of the first hour) and one plus six all perform well, while the nut R1 is extremely fast in the first 15 minutes, which is very suitable for emergency charging. The other Android flagship level is very close.
Finally, it is necessary to remind again that in the single endurance test, there is still a large gap between different models. Users should pay attention to the difference of small items according to their own needs. The focus is on the charging speed of key nodes in the previous hour, which is more representative of actual use.
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