The price difference of wireless chargers on the market is relatively large, ranging from 30, 40 yuan to 400, 500 yuan, and the difference is as high as 10 times. How much difference is there in the use experience?
The Truth Lab prepared four wireless chargers and compared them using the Samsung Galaxy S9+ and the Apple iPhone 8 Plus, to see how the wireless chargers at different prices differ in charging speed.
Samsung's original charger's charging efficiency advantage is also reflected in the charging power. The first 40 minutes of power are relatively high, the peak value is close to 10W, while the other wireless charger peak power is only maintained between 7 and 8W.
4 wireless chargers are introduced briefly
The Hengping wireless chargers are the Belkin Boost Up Wireless Charger (iPhone), the Samsung Original Wireless Charger (EP-PN920, the second generation), the Xiaomi Wireless Charger and the Nanfu CoolBreaker AirCharge Mobile Wireless Charger.
The four wireless chargers have the following parameters:
Except for Belkin, there are no major differences in the parameters of the other 3 wireless chargers. Among them, the Belkin Boost Up wireless charger is an iPhone version, which supports iPhone 7.5W wireless fast charge. The Xiaomi wireless charger supports Xiaomi MIX 2S 7.5W wireless fast. Charge, but the official parameter indicates that the actual maximum output power is 9W.
In the pre-research laboratory tests, it was also found that although the output power is similar, the compatibility of different wireless chargers may still be different. The wireless chargers recommended by the authorities are often better than other third-party products, and the charging power will be higher. , charging speed will be faster.
Comprehensive review of mobile phone wireless charging: Xiaomi wireless charger is really suitable for iPhone?
According to this theory, is it equivalent to 'Kinging' the Galaxy S9+, and the iPhone 8 Plus will use its own/Officially recommended wireless charger to charge faster?
We can't make this conclusion before the actual test, because this test phone was changed from iPhone X to iPhone 8 Plus, and the charging condition was changed from '20% charge for 30 minutes' to 'From 0% charge to full charge. ', which wireless charger is more forceful is not necessarily.
Charge test condition description
Also mentioned above This test is a wireless charging test from 0% to 100% power , We will run the sub-software to drain the phone's battery power to the natural shutdown, let the phone stand for a while until its temperature drops, and then start the wireless charging test.
During the charging process, the mobile phone inserts the default card, closes the screen, turns on the WiFi and other normal functions, and records the voltage, current and power every 5 minutes.
Among them, the Belkin Boost Up wireless charger has its own integrated charging line and charging head, so it directly records its total input power with a mini-power monitor.
The remaining three wireless chargers are equipped with a Micro USB/USB Type-C interface. The Power Z test meter can be used to record the output power of the charging head (the charging head uses the millet MDY-08-ES).
↑↑↑ Belkin Boost Up wireless charger comes with external power supply
↑↑↑Micro power monitor
/
↑↑↑Power Z test sheet
↑↑↑ Millet MDY-08-ES
PS: Since the Belkin Boost Up wireless charger directly detects the total input power, the power is the part consumed by the power adapter. The value will be higher than the other three wireless chargers recording the output power, about 0.5 to 1 W.
Wireless charging test results and analysis
First of all, because the Samsung Galaxy S9+ can display the power in real time, the full time can be accurate to 1 minute. However, the iPhone 8 Plus needs to light up the screen to see the power. The full time can only be accurate to 5 minutes. However, the error is within 5 minutes.
Samsung Galaxy S9+
The Samsung Galaxy S9+ uses Samsung original wireless charger to charge 173 minutes, which is about 30 minutes shorter than the other 3 third-party wireless chargers. The advantage is very obvious.
On the other hand, the other three wireless chargers had almost the same charging speed. The Belkin Boost Up wireless charger scored 207 minutes, the millet wireless charger scored 204 minutes, and the Nanfu Coolbo AirCharge phone wireless scored 201 minutes, showing little difference.
Samsung's original charger's charging efficiency advantage is also reflected in the charging power. The first 40 minutes of power are relatively high, the peak value is close to 10W, while the other wireless charger peak power is only maintained between 7 and 8W.
iPhone 8 Plus
As for the iPhone 8 Plus, the results were somewhat unexpected, but it was reasonable. The four wireless chargers in the test had almost the same charging time. The charging time was as long as 230 minutes and the shortest 215 minutes.
The most expensive Belkin Wireless charger is the longest in total time, which may make everyone feel incredible, not to say that it supports Apple's 7.5W wireless fast charge.
In fact, iOS 11.3 adjusts the wired and wireless charging power of the iPhone to a certain extent. Among them, the wired fast charge blocks the unofficial PD fast charge function (that is, you want to charge the cable fast and you can only buy Apple's official USB Type- C went to Lightning line), and 7.5W wireless fast charge simply cut it all.
Compared to iOS 11.2, the iPhone's peak power in wireless charging has decreased in the new version of the system. The measured Belkin Boost Up 7.5W wireless fast charging time can only be maintained for 10 minutes, so under the iOS 11.3 Belkin Boost Up wireless charging The advantage of the device is much smaller.
From the 'iPhone 8 Plus wireless charging power statistics' chart, we can see that although Belkin Boost Up seems to have a dominant charging power, don't forget that we are counting its total input power and actually deduct the power consumed by the power adapter. Calculated and other wireless charger output power should be no difference.
We can compare the same support for 7.5W fast charge, separately loaded iPhone X for iOS 11.2 and iPhone 8 Plus for iOS 11.3.
The average power of charging for 1 hour from 20% power: iPhone X is 6.76W, while iPhone 8 Plus is only 5.87W The gap is still relatively large, to a certain extent, Apple's iOS 11.3 system to further limit the charging power.
Test summary
After testing, we can finally reach a conclusion: For the Samsung Galaxy S9+, the official original wireless charger is still the first choice , Even the old model EP-PN920 still hangs a public third party wireless charger.
For iPhone 8 Plus Since the iOS 11.3 system has adjusted the power of wireless fast charging, it is not necessary to entanglement the official high-priced wireless charger in the short term. Buy a well-known brand of entry-level wireless charger.
We also remind everyone that currently there are many 'pheasant products' in the wireless charger market, which cost more than 30 pieces and more than 40 pieces. It is recommended that you buy them carefully. Low-priced products do not necessarily have FOD detection capabilities. If not Carefully put a metal object on a poor quality wireless charger. The metal will be heated quickly and it may cause accidents.
