Eero, a manufacturer focusing on household WiFi routers, was founded in 2014 and acquired by Amazon in 2019.The charging head network has disassembled one of its 24W PD fast charging chargers.Recently, the charging head network has obtained a 140W model from eeroThe power adapter, which supports PD 3.1 140W fast charging. Next, we will test together to see how powerful this adapter is.
Product Introduction
This eero 140WThe power adapterIn appearance, it is flat and slender. On the right side, there is an integrated Type-C wire. The adapter is made of fireproof PC material and its shell is sanded. The front side is intaglio printed with the logo of "eero" brand.
The output end on the right side is designed at the integrated Type-C wire, which is inseparable and more stable, and the lengthened net tail is more resistant to bending.
Anti slip silicone pads are added at the four corners of the back, and at the same time, they are equipped with tiny openings or can accelerate heat dissipation.
The middle of the back is pasted with the product specification and parameter inscription sticker.
Model: C410011;
Input: 100-240V~2.5A 50/60Hz;
Output: 5V3A, 9V3A, 15V3A, 20V5A, 28V5A.
The power input interface of the adapter is still a national standard 3-hole plum blossom interface, and the internal metal pins are made of all copper nickel plated material, which has stronger conductivity, wear resistance and scratch resistance.
The AC cable plug at the input end adopts the national standard three pin plug, and is printed with 10A 250V~and other words and CCC certification mark.
The Type-C terminal is designed with a special PIN pin inside.
eero 140WThe power adapterThe width of the main body is about 70.12mm.
eero 140WThe power adapterThe height (thickness) of the main body is about 32.18mm.
The overall weight of the eero 140W power adapter is about 422.7g.
When the charger body is placed on the palm of an adult male, it looks like a flat charger.
Protocol testing
In addition to the marked fast charging protocol, understanding the complete protocol can facilitate users to select devices according to specific protocols, so as to achieve a better fast charging experience.
Using the POWER-Z KM003C tester, it is measured that the Type-C interface supports DCPPD3.1And other charging protocols.
In terms of PDO messages, it is measured that there are 5V3A, 9V3A, 15V3A, 20V5A and four groups of fixed voltage gears, as well as 15-28V 140A AVS supplementary voltage gears. Compared with conventional 140W adapters, 12V voltage gears are missing.
Product evaluation
Next, let's take a look at the specific use experience of this eero 140W power adapter. The charging head network will lead you to understand this laptop adapter from the aspects of compatibility test, full charge test, standby power consumption test, etc.
Charging compatibility test
During the compatibility test, we can clearly know the charging condition of the charger for each device. This time, we will test dozens of different models.Now let's see how the USB interface supports fast charging.
Connect the charging bank that supports Type-C PD 3.1 140W fast charging to the eero 140W power adapter, and use the POWER-Z KM003C tester to read that the input power of the charging bank terminal is 28.04V 4.83A 135.52W, confirming that it supports PD 3.1 fast charging.
Connect the MacBook Pro laptop to the eero 140W power adapter, and use the POWER-Z KM003C tester to read that the input power of the laptop terminal is 20.02V 4.65A 93.07W.
Summarize the device charging data into a table, and it can be seen that the 5V and 9V voltages of handshakes of different brands have little difference in power;Handset, tablet, laptop and other devices support high-power fast charging equipment, and can shake hands with 15V and 20V voltage gears;For equipment that can support PD 3.1 fast charging, 28V voltage can be grasped.
The histogram is drawn. It can be seen that the eero 140W power adapter is more suitable for high-power products such as laptop computers and handheld computers, and the measured value can reach 135.52W;Occasionally, the mobile phone can be charged in emergency, but the charging power is stable in the range of 10-18W, and a few can reach about 25W;In general, the eero 140W power adapter has good compatibility with laptops, focusing on fast charging of high-power devices such as laptops.
Full charge test
The EERO 140W power adapter supports PD 140W charging at the maximum power. In terms of test equipment, the charging head network selects MacBook Pro M1 Max as the test object. The EERO 140W power adapter and MacBook Pro M1 Max are placed in a 25 ℃ incubator and powered on. The test results are as follows.
After connecting the power supply, shake hands with the 20V voltage, and the power is stable at about 93W in the first 40 minutes;Then the power drops to about 65W and continues to charge for 53 minutes;Then the power drops to about 42W and continues to charge for 1h and 09min;Then the power decreases in a "curve" and continues until the end of charging. The whole charging process takes about 2 hours and 08 minutes.
The line chart is drawn. It can be seen that it takes 33 minutes for the eero 140W power adapter to charge the MacBook Pro M1 Max to 50%, 58 minutes to 80%, and 2 hours and 08 minutes to 100%.
Let's see how the eero 140W power adapter charges the iPhone 15 Plus.
After the power supply is connected, the 9V voltage is shaken, and the power is stabilized at about 26W in the first 17 minutes;Then the power drops to about 21W and continues to charge for 30 minutes;Then the power drops to about 15W and continues to charge for 41 minutes;In the 50th minute, the voltage drops from 9V to 5V, and then the power drops to about 8W and continues to charge for 1h and 04min;It lasts for about 1 hour and 59 minutes until the end of charging.
The broken line chart is drawn. It can be seen that it takes 25 minutes for the eero 140W power adapter to charge the iPhone 15 Plus to 50%, 53 minutes to 80%, and 1 hour and 59 minutes to 100%.
No load power consumption test
Whether or not the charger will waste power when it is plugged into the socket and not used, and how much power will be lost, are questions in the minds of many readers. The standby power consumption link is to answer this question.Plug the charger into the socket of the Becky power meter, turn off the screen and light, and read the data on the power meter. The test results are as follows.
According to the power meter test, the no-load power consumption of the charger under the voltage of 220V 50Hz is 0.09W, and the annual power consumption is about 0.79KW · h. If the market price is 0.6 yuan/KW · h, the annual power consumption of the charger is about 0.47 yuan.
Let's look at the no-load power consumption under 110V 60Hz voltage. The power consumption read by the power meter is 0.04W, which translates into about 0.525KW · h of electric energy lost in a year. If the market price is 0.6 yuan/KW · h, the annual electric charge of the charger is about 0.21 yuan.
Summary
After the above no-load power consumption test, the eero 140W power adapter is not used when it is plugged into the socket under the voltage environment of 220V 50Hz, and the electricity consumption is about 0.47 yuan a year;However, in the 110V 60Hz voltage environment, it is not used when it is plugged into the socket, and the electricity consumption is about 0.21 yuan a year.
Conversion efficiency test
In essence, the charger is a conversion device, and there will be losses in the process, which will be emitted in the form of heat;The power drawn by the charger from the socket is often larger than the power marked by the charger;Test the conversion efficiency of the eero 140W power adapter under 220V 50Hz and 110V 60Hz AC input respectively. The following figure shows the test results.
First, let's see how the conversion efficiency is under 220V 50Hz voltage. The overall conversion efficiency is between 86.16-91.32%;The highest conversion efficiency is 28V5A gear, and the conversion efficiency reaches 91.32%;The lowest conversion efficiency is 5V3A gear, and the conversion efficiency is 86.16%.
Then take a look at the conversion efficiency under 110V 60Hz voltage. The overall conversion efficiency is between 87.87-91.22%;The highest conversion efficiency is 28V5A gear, and the conversion efficiency reaches 91.22%;The lowest conversion efficiency is 5V3A gear, and the conversion efficiency is 87.87%.
On the whole, the conversion efficiency of the eero 140W power adapter under two types of voltage is excellent among similar chargers.
Ripple test
Since switching power supply is used in the charger, the secondary output of the transformer is not DC, which needs to be output through rectification and capacitor filtering, that is, the output of the charger will have ripple;The charging head network uses an oscilloscope to test the ripple value of the charger output, compare it with the industry standard, and test the output quality of the charger.The lower the ripple, the higher the output quality of the charger.
No-load ripple
First, look at the no-load ripple under the voltage of 220V 50Hz. The highest peak and peak of ripple is 5V0A, and the peak and peak of ripple is 78mVp-p;The lowest ripple peak value is 20V0A, and the ripple peak value is 44mVp-p.
Then let's see how the no-load ripple behaves under 110V 60Hz voltage. The highest peak and peak value of ripple is 12V0A gear, and the peak and peak value of ripple is 68mVp-p;The gear with the lowest ripple peak value is 28V0A, and the ripple peak value is 42mVp-p.
Load ripple
First, take a look at the load ripple under the voltage of 220V 50Hz. The highest peak and peak value of ripple is 5V3A gear, and the peak and peak value of ripple is 74mVp-p;The lowest ripple peak value is 15V5A gear, and the ripple peak value is 52mVp-p.
Then let's see how the load ripple behaves under 110V 60Hz voltage. The highest ripple peak and peak value is 28V5A gear, and the ripple peak and peak value is 70mVp-p;The gear with the lowest ripple peak value is 15V3A, and the ripple peak value is 46mVp-p.
Summary
In YD/T 1591-2009 communication industry standard, the ripple requirement of the charger is not higher than 200mVp-p. Under the input voltage of 220V 50Hz and 110V 60Hz, the maximum ripple peak value of the output power of the eero 140W power adapter is 78mVp-p, which meets the industry standard that the ripple is not higher than 200mVp-p.
Temperature test
The charger is a kind of conversion equipment. There will be losses during the charging process, which will be emitted in the form of heat, so the charger will generate heat.The eero 140W power adapter supports up to 28V 5A 140W output. Place the charger in a 25 ℃ incubator and collect the temperature of the charger surface after one hour of 28V5A load.
First, let's see how the temperature of the charger behaves under the 220V 50Hz voltage output.
One hour later, the surface temperature of the charger photographed by the thermal imager was 39.6 ℃.
The surface temperature of the charger taken by the thermal imager on the other side is 37.2 ℃.
Let's see how the temperature behaves at 110V 60Hz.
One hour later, the maximum temperature of the charger surface photographed by the thermal imager is 55.5 ℃.
The surface temperature of the charger taken by the thermal imager on the other side is 57.3 ℃.
Summarize the temperature data into a table. The maximum temperature is 39.6 ℃ at 220V 50Hz and 57.3 ℃ at 110V 60Hz.
Plotting the data into a column chart, it can be seen that the maximum temperature of the eero 140W power adapter at the output voltage of 220V 50Hz and 110V 60Hz is 57.3 ℃, and the maximum temperature during the load test meets the requirements of IEC International Electrotechnical Commission IEC62368 and the new national standard GB4943.1 2022 for the test of electronic and electrical equipment, and the temperature is not higher than 77 ℃.
Summary of charging head network
The appearance of the eero 140W power adapter adopts the classic design of the old notebook power output and input terminals, and uses the all copper nickel plated plum blossom interface. The national standard three pin AC cable and the integrated Type-C port charging cable can be compatible with most smart devices and wall plugs on the market.
In terms of performance, Type-C interface supportsPD3.1140W fast charging, which is measured to provide good fast charging support for both tablet and laptop devices;It has a standby power consumption of less than 0.09W and a conversion efficiency of 86.16-91.32% under 110V 60Hz and 220V 50Hz mains power supply, and performs well.
Under 220V 50Hz AC input heavy load, the low gear output ripple difference is relatively average, and the ripple values are lower than 78mVp-p. The measured results show that the output of this charger is stable;With PD 28V5A 140W power, the output temperature is about 57.3 ℃ for one hour at room temperature of 25 ℃, showing excellent performance.
On the whole, the eero 140W power adapter adopts an integrated Type-C fast charging line design, which is mainstream among similar products in terms of conversion efficiency, power output quality and temperature control.