Introduction
ChargerLAB recently conducted a series of tests on the Huawei MateBook X Pro. This laptop supports 140W fast charging and is equipped with a 140W charger, which is currently the Huawei charger with the highest charging power.
Today we will conduct charging tests on the original 140W charger to see how Huawei’s first 140W charger performs.
Product Appearance
The 140W charger comes in pure white. The case is made of PC fire-retardant material with a smooth surface.
It only has one orange USB-C port. The words “HUAWEI Super Charge” and “140W” are printed below the port.
The power adapter adopts a fixed two-pin design.
The specs info are printed below the prong. Model is HW-200700CP0. It can support input of 100-240V~50/60Hz 2.5A. It can support output of 5V2A, 9V3A, 15V3A, and 20V7A.
The connector of the dual USB-C cable is made of PC material and is engraved with "7A".
The length of the dual USB-C cable is about 181 cm (71.26 inches).
The length of the charger is about 60 mm (2.36 inches).
The width of the charger is also about 60 mm (2.36 inches).
The height is about 31 mm (1.22 inches). The volume is about 111.6 cm³. So, the power density is about 1.25W/cm³.
And the weight is about 188 g (6.63 oz).
Protocol Test
The ChargerLAB POWER-Z KM003C shows that the USB-C can support UFCS, FCP, SCP, QC2.0, QC5, DCP, PD3.0, and PPS charging protocols.
And it has five fixed PDOs of 5V3A, 9V3A, 12V3A, 15V3A, 20V4.5A and a set of PPS, which is 3.4-21V4.5A.
It can support four sets of UFCS: 5.5-7V4A, 7.0-10V6.6A, 20V7A, and 21V6.6A.
Charging Test
Now, let's take a look at its charging tests.
Compatibility Test
Phones
We use it to charge phones, tablets, game consoles, and laptops during the compatibility test.
Our tester shows that when using it to charge the Huawei Mate60 Pro, the charging power is about 18.4V 4.26A 78.4W.
Use it to charge the nubia Z30 Pro, the charging power is about 18.4V 4.26A 78.4W.
The most phones tested can reach about 9V. Huawei brand phones can reach higher currents and have significantly higher charging power.
We have compiled the test results into a bar chart. The highest charging power is 78.41W for the Huawei Mate 60 Pro. Phones compatible with the PPS fast charging protocol, such as nubia Z30 Pro, can reach a power of about 77W. In addition, phones that support the UFCS fast charging protocol will have higher charging power than other models.
Game Consoles
Use it to charge the Lenovo Legion Go, the charging power is about 19.92V 4.31A 85.8W.
As you can see, there is no compatibility issue. The tested devices can reach about 15V and 20V. Basically, it can reach the highest power of the device itself.
We have compiled the test results into a bar chart. The Lenovo Legion Go has the highest charging power of 85.8W. The charging power of the Nintendo Switch is about 15W, while the charging power of the Steam Deck is about 29W.
Tablets
Our tester shows that when using it to charge the 11-inch iPad Pro, the charging power is about 15V 2.17A 32.57W.
As you can see, there is no compatibility issue. The iPads reach a voltage of about 15V, and the other tablets reach about 9V.
We have compiled the test results into a bar chart. The Samsung Tab S8 has the highest charging power of 33.6W. The other tablets can also reach their maximum charging power.
Laptops
Use the Huawei original 140W charger to charge the Huawei MateBook X Pro, the real-time charging power is 19V 6.84A 135.92W.
As you can see, all tested laptops can reach a voltage of about 20V.
We have compiled the test results into a bar chart. The Huawei MateBook X Pro has the highest charging power of nearly 140W. The highest charging power of the rest of the laptops is 89.63W.
Full Charging Test
Next, we'll use it to fully charge the Huawei MateBook X Pro.
The charger and the laptop will be put into a 25°C (77℉) thermotank throughout the test. Here is the charging curve made by the PC software of KM003C.
The voltage is always about 20V. The charging curve can be divided into eight parts. In the first part, the power was about 80W for the first 3 mins. Then, the power increased to 136W and continued until 13 mins. The power then dropped to 58-78W and lasted until 22 mins. Then, the power increased to 136W and continued until 25 mins. The power then dropped to 90W and lasted until 31 mins. Then, the power increased to 136W and continued until 32 mins. Then, the power gradually drops to 120W and 100W in turn. The final part begins at 38 mins, and the power slowly drops to almost zero. It takes 1 hour and 35 mins to be fully charged.
We plot it into another curve to see how fast it can be. It can charge the Huawei MateBook X Pro to 50% in 27 mins and 80% in 44 mins, and it reaches 100% in 1 hour and 35 mins.
Next, we'll use it to fully charge the Huawei Pura70 Pro+.
The voltage is always around 18V. The charging curve can be divided into four parts. In the first part, the peak power stayed at 92W for the first 1 min. Then, the power gradually drops to 68W and 42W in turn. The final part begins at 42 mins, and the power slowly drops to almost zero. It takes 38 mins to fully charge the Huawei Pura70 Pro+.
Standby Power Test
Next, we will test its standby power consumption.
The power consumption at 220V 50Hz is 0.12W, and 0.006W at 110V 60Hz, which is about 1.05 and 0.053KW·h in one year, respectively. So, you do not need to worry about the waste of the electricity.
Conversion Efficiency Test
Then, we are going to the conversion efficiency test. We tested the conversion efficiency at two inputs: 220V 50Hz and 110V 60Hz. Below are the test results.
The conversion efficiency varies from 85.52% to 92.91% at 220V 50Hz, and the conversion efficiency varies from 84.84% to 91.86% at 110V 60Hz. The charger achieves a conversion efficiency of up to 92.91% under the two voltages, which is at the mainstream level for similar devices.
Ripple Test
Power adapters rely on switch-mode power supplies, which means that the output from the transformer's secondary winding is not direct current and must be rectified and filtered by capacitors before being outputted. As a result, ripples can exist in the output signal. To evaluate the quality of the adapter's output, ChargerLAB employs an oscilloscope to test the ripple value of the converter's output and compare it with industry standards. In general, the lower the ripple, the higher the output quality.
Firstly, let's check out its ripple without load. When the output is 5V 0A, the lowest ripple is around 62 mVp-p. When the output is 20V 0A, the highest ripples are around 72 mVp-p.
Then, move to the ripple test when loaded. When the output is 12V 5A, the highest ripple is 76 mVp-p. When the output is 9V 3A, the lowest ripple is 26 mVp-p. Overall, the performance is acceptable.
Temperature Test
Then, we are going to the maximum temperature test. We put the charger into a 25°C (75℉) thermotank throughout the test. And recorded the highest temperature on the front and back after charging at 20V4.5A for an hour.
First, let’s take a look at the temperature under 220V 50Hz after an hour.
After one hour of charging, the maximum temperature on the front is 64.8 ℃ (148.64 ℉).
And the maximum temperature on the back is 61.7 ℃ (143.06 ℉).
Next, let’s take a look at the temperature under 110V 60Hz after an hour.
After one hour of charging, the maximum temperature on the front is 66.1 ℃ (150.98 ℉).
And the maximum temperature on the back is 71 ℃ (159.8 ℉).
Creating a bar chart to represent the data, it is evident that this charger reaches a maximum temperature of 71 ℃ when operating under 110V 60Hz. This temperature complies with the International Electrotechnical Commission (IEC) 62368 standards for electronic and electrical equipment tests, which stipulates that the temperature should not exceed 77 °C, but it is very close.
Summary of ChargerLAB
The Huawei original 140W charger is overall white. It only has one USB-C port and comes with a dual USB-C cable.
The charger is compatible with most charging protocols. Since it supports UFCS 140W protocol and proprietary protocol, it can provide higher charging power for Huawei products. Both standby power consumption and conversion efficiency are at mainstream levels. The results of the ripple test are acceptable. The temperature after charging for an hour is above 70 °C (158 ℉) but as a high-power desktop charger you won't be moving it around often, so temperature isn't a big issue. If you are a Huawei fan or have many Huawei devices, it will be a good choice.
Related Articles:
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2. Teardown of Kovol 140W PD3.1 Dual USB-C GaN Charger (P66-2C-140W-UK)
3. Teardown of LDNIO 140W GaN 6-in-1 Desktop Charger (A6140C)
