preface
Shenzhen Gushi Technology Co., Ltd. is a charger, data cable, power adapter and other products specializing in the production and processing of the company, with a complete and scientific quality management system. Over the years, we have continued to innovate to adapt to the development of the global electronics industry, and have provided many high-quality and inexpensive adapter products for new and old customers.
Charging head network has previously evaluated, disassembled 20W, 30W and other chargers from ancient stone, this time for everyone to bring is 65W power of ancient stone double gallium nitride, 1C1A interface configuration, taking into account the new and old equipment, the next for everyone to savor the performance of this charger.
Product introduction
Gushi 65W Gallium Nitride charger is packaged simply, and GaN Fast Charger explains that this is a charger that uses Gallium nitride components.
The charger is white throughout, with the words 65W printed on the lower right corner of the front.
The interface design is at the top, USB-C + USB-A dual-port configuration, new and old devices have good compatibility.
The adhesive tongue of the USB-A interface is orange, which is not very familiar.
The pins are double-legged national standard plugs, fixed pin design, with better stability.
The bottom is printed with product parameters, the model is GS-W65A0927, support broadband voltage input, USB-C interface maximum output 65W, USB-A interface maximum output 18W, dual port simultaneous output maximum power 63W.
The height of the Gushi 65W Gallium Nitride charger is about 57.15mm.
The length is approximately 50.86mm.
The width is about 28.91mm, the size of the charger is about 57.15×50.86×28.91mm, the volume of the charger is about 84.03cm, and the power density is about 0.77W/cm when calculated by the charger power of 65W.
Compared with the Apple 67W charger, which is smaller is needless to say.
In the palm of your hand, the size control is good.
The charger weighs about 115.1g.
Product reviews
After introducing the appearance size of the Gushi 65W Gallium Nitride charger, I will take you to see the specific use experience of this charger. The charging head network will take everyone to understand this charger from the aspects of protocol test, compatibility test, charging test, standby power consumption test, etc.
Charging protocol testing
In terms of protocols, ChargerLAB's POWER-Z KT002 reads the charger's fast charging protocol, and the actual test supports Charging Protocols such as Apple2.4A, QC2.0, QC3.0, QC4+, AFC, FCP, SCP, PE, PD3.0 and PPS.
In terms of PDO messages, it supports five sets of fixed voltages of 5V3A, 9V3A, 12V3A, 15V3A and 20V3.25A and two sets of PPS voltage files of 3.3V-11V3A and 3.3V-21V3A, which has better device compatibility.
Read the fast charging protocol of the USB-A interface, and support Apple2.4A, QC2.0, QC3.0, AFC, FCP and other charging protocols.
Charging compatibility testing
Charge the iPhone 13 Pro Max at approximately 9.11V 2.93A 26.77W.
Charge the Black Shark 4 Pro with approximately 16.61V 3.12A 51.94W.
Charge the Nubia Z30 Pro at approximately 17.15V 3.4A 58.48W.
Charge the Redmi Note11 Pro+ with approximately 16.71V 3.14A 52.57W.
Charge the iPad Pro at approximately 14.84V 1.94A 28.85W.
Charge the MacBook Pro 16 at approximately 19.68V 3.12A 61.46W.
Powering the Switch TV base, the TV mode was successfully triggered, and the power was about 14.93V 0.36A 5.51W.
Charge the Mijia hand drill, the power is about 9.08V 1.46A 13.26W.
Organize the data like a table, whether it is an iPhone, notebook or Android machine, the compatibility performance is stable.
The charging power is sorted from high to low, which is convenient for everyone to compare.
Charge the Meizu 17 Pro with a power of approximately 9.24V 2.47A 22.91W.
Charge the Meizu 18 Pro with a power of approximately 9.02V 2.83A 25.56W.
The data is organized as shown in the table, and the maximum output of the USB-A interface is 25W+, which is better than the shell annotation.
Arranging the charging power from high to low, Meizu's two models perform very well.
Charging the MacBook Pro 16 and Redmi Note11 Pro at the same time, the power is about 42.77W and 14.3W, respectively, with a total power of 57.03W.
Full test of charging
In the test of the whole charging process, the MacBook Pro 16 2021 M1 Max was selected to charge, and the following is the actual test of the whole process.
The picture above is a change in the entire charging process of the MacBook Pro 16 2021 using the Gushi 65W Gallium Nitride charger, which is roughly divided into three stages and ends in 2 hours and 33 minutes.
Drawing the whole charging process into a curve, it can be seen that half an hour of charging 28%, 1 hour of charging 57%, fully charged takes 2 hours and 33 minutes.
Standby power consumption test
If the charger is often plugged into the socket and not used, it will consume power, but it is very small. Many readers want to know whether the charger is wasted if it is always plugged into the socket, and the standby power consumption test session is to answer this question.
After the power meter test, the charger in 220V 50Hz no-load power consumption of 0.151W, converted to a year's loss of electrical energy of about 1.32KW·h, if the market price of electricity is 0.6 yuan / KW·h, the charger's annual electricity cost is about 0.792 yuan.
The no-load power consumption at 110V 60Hz is 0.109W, which translates to a year's loss of electrical energy of about 0.95KW·h, and if the market price is 0.6 yuan /KW·h, the charger's annual electricity cost is about 0.57 yuan.
Conversion efficiency testing
A charger is essentially a conversion device that is lost during the process and dissipated in the form of heat. We usually look at the charger above the parameter output 100W or 65W is the maximum output power that the charger can provide for the device, but the charger draws power from the socket is often larger, the following is the charger in the case of 220V 50Hz and 110V 60Hz AC input respectively carried out conversion efficiency test, the test results are as follows:
At 220V 50Hz, the output power of the charger in each voltage gear is fully tested: five gears are measured to measure the input power of the AC terminal of the power strip and the output power of the USB terminal, and the conversion efficiency of the available charger varies from 87.93% to 92.54% through calculation.
At 110V 60Hz, the conversion efficiency of the charger varies from 89.49% to 91.27%.
Ripple test
Due to the switching power supply in the charger, the secondary output of the transformer is not direct current, and it needs to be rectified and capacitor filtered, that is, there will be ripple in the charger output. The charging head network uses an oscilloscope to test the ripple value of the charger output, compare with the national standard, and detect the output quality of the charger. The lower the ripple, the higher the output quality of the charger.
This is the ripple test using the charger at 220V 50Hz AC input, the ripple test is divided into no load (Y axis current in the histogram is 0A) and heavy load (the Y axis current in the histogram is non-0A), the maximum is 132mVp-p, the charger is at 5V3A output; the minimum is 28mVp-p, and the charger is at 20V3.25A output.
At 110V 60Hz, the maximum is 48mVp-p, the charger is in the 5V0A no-load state, and the minimum is 30mVp-p, and the charger is at 15V0A no-load.
Ripple test summary
The national standard in the charger ripple requirements are not higher than 200mVp-p, Gushi 65W gallium nitride charger in 110V 60Hz, 220V 50Hz input voltage, all output power ripple peak-to-peak are lower than 200mVp-p this standard, good performance.
Temperature testing
As mentioned earlier, the charger will involve the problem of efficiency conversion, and the vast majority of the lost power is dissipated by heat, so the heat of the charger working for a long time is also an important part of the test. Let the charger output at 65W power for one hour continuously, collect the surface temperature of the charger, and place the charger in a 25 °C incubator throughout the experiment.
First, let's take a look at the temperature performance of the charger in the mains environment of 220V50Hz.
After one hour, the maximum temperature of the front of the charger is 65.4 °C.
The maximum temperature on the back of the charger is 63.5°C.
Look at the 110V60Hz mains environment.
After one hour, the maximum temperature of the charger front is 62.1 °C.
The maximum temperature on the back of the charger is 68.5°C.
Charging head net summary
Like other products of Gushi, Gushi 65W Gallium Nitride charger maintains the brand's consistent high level, simple appearance, USB-A + USB-C dual interface configuration, good compatibility between new and old devices, fixed pin design for stable consideration, power density of about 0.77W/cm, volume control is remarkable.
In terms of performance, Gushi 65W Gallium Nitride charger is compatible with a variety of proprietary protocols, the measured USB-C interface supports Apple2.4A, QC2.0, QC3.0, QC4+, AFC, FCP, SCP, PE, PD3.0 and PPS and other charging protocols, USB-A interface charging also has surprises, the amount of increase is not increased; power intelligent distribution, support for two devices at the same time fast charging. In addition, the ripple performance of the charger is stable, and in the invisible place, the ancient stone is still solid.