Preface
In an environment where competition for smart device chargers is becoming increasingly fierce, the sockets seem to be calm on the surface, but undercurrents are surging in actual measurements. In the past few years, sockets have changed from the number of traditional AC interfaces to the type of interfaces. For the industry, it is an inevitable trend under the development of science and technology. The products will eventually be delivered to consumers, so they can have a better charging experience. most important.
Bull is one of the brand benchmarks in the socket industry. While complying with the new national standards for sockets, it is also actively innovating and developing in terms of individual appearance, portability, rich interfaces and safe electricity usage guidelines. Recently, Charging Head Network has obtained a Bull 86 conversion plug that supports 20W PD fast charging. It has different performance in terms of interface, appearance and safety. Let’s take a look at what new discoveries we will make.
Product Introduction
As usual, let’s look at the packaging first.
packaging follows Bull's consistent green and white design style, with the product's linear appearance and name printed on the front, and the Bull brand logo printed on the white part at the bottom.
The back of the packaging box is printed with inscriptions on the adapter specifications, precautions and anti-counterfeiting identification methods.
There is only the adapter body inside the package. It is designed with a white appearance of fire-retardant material and has a USB interface and an AC strong power interface.
is equipped with three USB interfaces 2A1C on the front, and the internal rubber cores of the USB female ports are all blue.
The small round hole in the upper right corner is a red power indicator light.
adopts a five-port new national standard interface design. There is a white protective door inside the jack to prevent the risk of electric shock.
adopts a fixed pin design on the back, which is suitable for home use. Travel storage pins will scratch the surface of other devices. The bottom of the
converter has two sets of dual-port AC sockets, and it also has a protective door design inside. The top of
is designed with a click-type micro switch for one-button total control. The round-hole power indicator light makes it easy to know the power status.
has product specification parameter inscriptions printed on the back.
Model: GN-9322KQ
USB input: 100-240V~ 50/60Hz
USB-C single port output: 5V3A, 9V2.22A, 12V1.66A
USB-A single port output: 5V3A, 9V2A, 12V1.5A
more Port output: 5V3A Max
converter length Approximately 83.32mm. The height of
converter is about 83.18mm. The width (thickness) of the
converter is approximately 28.34mm. The weight of
converter is about 157.5g.
protocol test
This test module mainly tests the fast charging protocol of the charger. In addition to the marked fast charging protocol, users can match the output device according to the specific protocol.
uses POWER-Z KM002C to read the fast charging protocol of the USB-C port. The actual test supports charging protocols such as FCP, SCP, QC3.0 and PD3.0. In terms of
PDO messages, port C supports three sets of fixed voltages: 5V3A, 9V2.22A, and 12V1.67A.
uses POWER-Z KT002 to read the fast charging protocol of the middle USB-A interface. The actual test supports charging protocols such as AFC, FCP, QC2.0 and QC3.0.
uses POWER-Z KT002 to read the fast charging protocol of the left USB-A interface. The actual test supports charging protocols such as AFC, FCP, QC2.0 and QC3.0, and the two USB-A fast charging protocols are consistent.
product review
Next, I will show you the specific experience of using this charger. Charging Head Network will give you a comprehensive understanding of this charger from aspects such as compatibility testing, full charging testing, and standby power consumption testing.
charging compatibility test
compatibility test session can clearly know the charging status of each device by the charger. Charging Head Network will use dozens of devices with chargers for testing, presenting real test data to readers.
iPhone 13 Pro Max is currently the latest and largest iPhone phone, supporting fast charging power of about 27W. It uses USB-C to charge iPhone 13 Pro Max with a power of 8.97V 2.15A 19.33W.
charges the laptop, the power is 11.68V 1.6A 18.76W.
summarized the USB-C compatibility test data. Overall, this Bull GN-9322KQ 20W charger has good fast charging support for various brands of equipment, but the fast charging compatibility for several models is poor. In the
histogram part, this Bull’s 20W charger USB-C has the best compatibility with and Apple devices. The 20W power limit also makes the entire histogram trend relatively flat, and the power gap between the devices is not large.
Next, let’s take a look at the charging compatibility performance of this charger’s USB-A port.
charges Meizu 18 Pro with a power of 8.24V 2.68A 22.06W.
summarizes the USB-A compatibility test data. This Bull GN-9322KQ 20W charger has good compatibility with most other brands of mobile phones, especially when charging two mobile phones of and Meizu , the power can reach 22W, there is a certain power surplus, indicating that this charger is not exaggerated.
From the histogram, we can see the charging power of each device charged by this Bull GN-9322KQ 20W charger. The highest power is Meizu 17 Pro, which is 21.91W. The power histogram of other devices gradually decreases.
Multi-port Simultaneous Output Test
Bull’s conversion plug is equipped with a total of 3 USB interfaces, 1C2A. The USB interface supports 20W fast charging when outputting independently, but how is the power distributed when multiple ports are outputting at the same time? Can it charge normally? , it still needs to be tested in practice.
After actual testing, the three USB interfaces of the Bull 20W PD 86 conversion plug support simultaneous output and can provide charging services for three mobile phones at the same time.
full charging test
Bull 20W PD 86 conversion plug, USB-C supports 20W output, so this time I chose to charge iPhone 13 to see the actual measured data.
This is the data of the entire charging process of iPhone 13 using USB-C. At 2 minutes and 31 seconds, the voltage rises from 5V to 9V and enters fast charging. At 55 minutes, it drops from 9V to 5V input. Finally, charging ends at 1 hour and 47 minutes. The maximum power is 8.91V 2.15A 19.21W.
draws the entire charging process as a curve, and at the same time adds the entire charging curve of the iPhone 13 with Apple's 20W charger. You can see that the two curves almost overlap.
Bull 20W PD 86 conversion plug USB-C can charge iPhone 13 51% in half an hour and 84% in 1 hour. It takes about 1 hour and 47 minutes to fully charge.
Standby power consumption test
Nowadays, it has become normal for users to not unplug the device from the socket after using the charger to charge the device. Many readers want to know whether the charger wastes electricity if it is always plugged into the socket. The standby power consumption test session is to answer this question.
has been tested by power meter . The no-load power consumption of the charger at 220V 50Hz is 0.228W. The converted power loss in one year is about 1.99KW·h. If the market price of electricity is 0.6 yuan/KW·h, the charger The annual electricity bill is about 1.19 yuan. The no-load power consumption of
10V at 60Hz is 0.19W. After conversion, the power loss in one year is about 1.66KW·h. If the market price is 0.6 yuan/KW·h, the annual electricity bill of the charger is about 0.996 yuan.
Summary
The standby power consumption test is how much power will be consumed in a year if the charger is plugged into the socket and not used. As for the numerical value, the lower the better. First of all, after the above test, the standby power consumption of the Bull 20W PD 86 conversion plug is completely lower than the specified value of GB20943-2017 standard which should not be higher than 0.5W.
Let’s calculate the money on the premise that it meets the standards. According to actual measurements, if the Bull 20W PD 86 conversion plug is not used in the socket in a 220V mains power environment, the electricity bill used per year is about 1 yuan; while in a 110V mains power supply Under normal circumstances, if it is not used, the electricity bill used in a year is only about 9 cents.It's almost negligible.
Conversion efficiency test
The charger is essentially a conversion device, and there will be losses in the process, which are emitted in the form of heat. We usually look at the parameters on the charger. The output of 100W or 65W is the maximum output power that the charger can provide for the device, but the power the charger draws from the socket is often larger. The following is the charger's AC 220V 50Hz and 110V 60Hz Conversion efficiency tests were conducted separately under the input conditions, and the test results are as follows.
20V 50Hz, test the charger at full output power at each voltage range: the input power at the AC end of the power strip and the output power at the USB end are measured at the three levels. Through calculation, the conversion efficiency of the charger can be obtained from It ranges from 80.67% to 85.38%.
10V 60Hz, the charger's conversion efficiency ranges from 80.41% to 84.59%.
Summary
The conversion efficiency can reflect the quality of the charger. From the data point of view, the higher the percentage, the better. As can be seen from the above test data, the output efficiency of the three gears is around 80% to 86%, which is generally at a conventional level.
Ripple test
Since the charger uses switching power supply , the secondary output of the transformer is not direct current . It needs to be output through rectification and capacitor filtering, that is, there will be ripples in the charger output. Charging Head Network uses oscilloscope to test the ripple value output by the charger, compare it with national standards, and detect the output quality of the charger. The lower the ripple, the higher the quality of the charger's output.
ripple test is divided into two types: no load (Y-axis current in the histogram is 0A) and heavy load (Y-axis current in the histogram is non-0A). In the no-load part, under 220V 50Hz AC input, the charger has the highest ripple when it is in the 12V0A no-load state, which is 40mVp-p; when it is in the 9V0A no-load state, the ripple is the lowest, which is 24mVp-p. Under 110V 60Hz AC input, the
charger has the highest ripple at 24mVp-p when it is in the 9V0A and 12V0A no-load states; the lowest ripple is 16mVp-p when it is in the 5V0A no-load state. In the heavy-load part of
, under 220V 50Hz AC input, the charger has the highest ripple when it is in the 12V1.67A output state, which is 80mVp-p; when it is in the 9V2.22A output state, the ripple is the lowest, which is 56mVp-p. Under 110V 60Hz AC input, the
charger has the highest ripple of 80mVp-p when it is in the 9V2.22A output state; the lowest ripple is 56mVp-p when it is in the 12V1.67A output state.
Summary
The lower the ripple value, the higher the output quality of the charger. Judging from the test data, the ripple value of the entire charger is at a low level, indicating that the output quality of the charger is very high.
Temperature test
As mentioned earlier, the efficiency conversion problem will be involved when the equipment is working. Most of the power lost is dissipated as heat, so the heat generated by the equipment when working for a long time is also an important part of the test. Let the Bull 20W PD 86 conversion plug continue to output 12V1.67A 20W power for one hour, and collect the surface temperature. During the entire experiment, the Bull 20W PD 86 conversion plug was placed in the 25°C thermostatic box .
First, let’s take a look at the temperature performance of the Bull 20W PD 86 conversion plug in a 220V50Hz mains power environment.
html The maximum temperature on the two side surfaces of the Bull 20W PD 86 conversion plug taken using a thermal imager after 31 hours was 63.9°C.
The maximum temperature of the other two side surfaces is 50.2℃.
Let’s take a look at the temperature performance of the Bull 20W PD 86 conversion plug in a 110V 60Hz mains power environment.
html The maximum temperature on the two side surfaces of the Bull 20W PD 86 conversion plug taken using a thermal imager after 31 hours was 51.2°C.
The maximum temperature of the other two side surfaces is 64.1℃.
summarizes the tested temperature data. The temperature is about 50℃ to 64℃.
In the bar chart part, the Bull 20W PD 86 conversion plug has the highest temperature at 110V input, which is 64.1°C, and the lowest temperature at 220V input, which is 50.2°C, which is completely lower than the temperature limit specified in GB4943.1-2011.
charging head network summary
Bull 20W PD 86 conversion plug has three USB output interfaces 2A1C in appearance configuration, which can be connected in the living room or bedroom, no more messy wires, simple and versatile. The fixed pin design is more suitable for home use and is not frequently plugged and unplugged; and the USB interface protocol coverage is relatively comprehensive, and it is friendly to charging new and old interface devices. In terms of
performance, the Bull 20W PD 86 conversion plug USB-C supports 20W fast charging, which can provide fast charging support for mobile phones and tablets. The three USB interfaces can support 3 devices at the same time. Under the two types of mains power, compared with the no-load power standard, the standby power consumption of the conversion plug does not exceed 0.25W; the measured conversion efficiency is between 80.41% and 85.38%, which is at a conventional level; using the USB-C interface for iPhone 13 was tested from 0 to 100% full charge, which took 1 hour and 47 minutes, which is comparable to Apple's original 20W charger. It is recommended to use an MFi certified fast charging cable to achieve the best charging experience. In terms of the quality of the charger,
shows the ripple test and temperature test. Taking into account the differences in international mains power, two voltages of 220V50Hz and 110V60Hz were tested. In the no-load state and heavy load state, the ripple value did not exceed 80mVp- p, the output quality is also the consistent high-quality level of the socket; and the conversion efficiency is directly reflected in the working temperature. It meets the national standard requirements. Under domestic mains power, it does not exceed 65°C, and the body feels only warm.
Overall, the Bull 20W PD 86 conversion plug adheres to the manufacturing concept of safe home electricity use. It has multiple protective walls from the inside to the outside. The charging performance adjustment of the USB interface is also very good. With a fast charging cable, you can also have Apple’s original 20W Charger charging experience.
