Introduction

Recently, ChargerLAB has gotten a new UGREEN 45W dual-port GaN charger with a compact and portable size, which has a maximum output power of 45W, supporting 25W+20W fast charging for dual devices at the same time. Let's have a detailed review.

UGREEN 45W Dual-port GaN charger

The front of the box is printed with the appearance of the charger, the logo and the GaN 45W.

The back is printed with the specifications of the charger.

The side of the box is printed with icons of the features: multiple protection, foldable and portable, dual-port fast charging.

The package includes the 45W charger, manual and warranty card.

The charger is exquisite and compact with a white frosted appearance and rounded edges.

The front is printed with the logo of UGREEN.

The charger is equipped with dual USB-C ports, where there are icons of the applicable charging device.

The prongs are foldable.

Here are the specifications.

Model: CD294

Input: 100-240V~ 50/60Hz 1.2A

Output: USB-C1/C2: 5V3A, 9V3A, 12V3A, 15V3A, 20V2.25A, 3.3-11V4.05A

Total output power: 45W Max

Its size is about 49.08 X 39.53 X 39.62 mm (1.93 X 1.55 X 1.55 inches), with the volume of 76.87cm³ (4.69 in³) and power density of about 0.58W/cm³ (0.035 in³).

The weight is about 95.3g (3.36oz).

his is how it looks in my hand.

Protocols

The ChargerLAB POWER-Z KM002C finds that the USB-C1 port supports FCP, SCP, QC3.0/4+, PD3.0 and PPS fast charging protocols, etc.

The USB-C1 also supports five fixed PDOs of 5V3A / 9V3A / 12V3A / 15V3A / 20V2.25A and one PPS of 3.3-11V4.05A.

The USB-C2 port supports the same fast charging protocols as the USB-C1 port.

The USB-C2 port also supports the same PDOs and PPS as the USB-C1 port.

Review

Compatibility Test

ChargerLAB will use tens of devices for compatibility testing to present readers with the most accurate data.

It is 9.05V 2.92A 26.45W when the USB-C port is charging the iPhone 13 Pro Max. The USB-C port supports 45W fast charging, which can easily meet the charging needs of the iPhone 13 Pro Max.

It is 14.55V 2.19A 31.92W when charging the iPad Air 5, being in the fast charging.

It is 19.03V 2.22A 42.19W when charging the MacBook Pro 16 2021, reaching the maximum output power of the charger.

The TV mode of Switch supports PD fast charging but requires 15V3A and above, which means the charger should support 45W fast charging at a minimum. The UGREEN 45W GaN charger has successfully powered the TV mode with 15.03V 0.32A 4.87W.

Here comes the charging compatibility test of UGREEN 45W GaN charger.

ChargerLAB's histogram shows the charging power of each product directly. The laptops have the highest power.

Power Distribution Test

This UGREEN 45W GaN charger supports 45W fast charging when one USB-C port is outputting, but it is equipped with two USB-C ports, so we will test how the output power is distributed when two are outputting simultaneously.

Using two ports to charge the laptop and iPad Air 5 with 12V simultaneously, the powers are 23.70W and 19.05W, respectively, which can meet the fast charging needs of both the tablet and the laptop, with the power distribution of 22.5W+22.5W.

Full Charging Test

We used it to fully charge the MacBook Air M1.

This is the charging curve of fully charging MacBook Air M1 with UGREEN 45W GaN charger. The input was at about 40W in the first 38 minutes, and by 54 minutes, it gradually dropped to about 31W; by 1 hour and 26 minutes, it gradually decreased to 21W and ended at 2 hours and 9 minutes. The maximum power is 19.08V 2.17A 41.42W.

The curve shows that UGREEN 45W charges 39% in 30 minutes, 71% in 1 hour, and it takes about 2 hours and 9 minutes to fully charge the MacBook Air M1.

Standby Power Test

Nowadays, most users won't unplug the charger from the outlet after charging. So it's necessary to figure out if there is any power comsumption in this case and how much it is. Let's have a standby power test.

The power meter shows that the standby power consumption of the charger at 220V 50Hz is 0.025W, which equals about 0.21KW-h in a year. At 110V 60Hz, it is 0.029W, equaling about 0.25KW-h one year.

The lower the value of the standby power consumption, the better. The UGREEN 45W GaN charger has a good performance at both 220V and 110V.

Conversion Efficiency Test

The charger is essentially a conversion device. So energy will be lost in the process of converting. Here comes the conversion efficiency test of UGREEN 45W GaN charger.

The conversion efficiency shows the quality of the charger. The higher the percentage, the better. When charging the laptops, it has high efficiency and lower heat.

The conversion efficiency of the the charger varies from 85.94% to 90.70% at 220V 50Hz and 84.16% to 89.63% at 110V 60Hz.

Ripple Test

Most chargers adopt switching power supply currently. And there will be ripples in the output current. The lower ripple means better quality.

The ripple test is divided into no-load (when the current is 0A) and loaded (when the current is non-0A).

When no-load, at 220V 50Hz, when the output is 5V0A, the highest ripple is 48mVp-p. And when the output is 12V0A and 20V0A, the lowest ripple is 16mVp-p.

At 110V 60Hz, when the output is 5V0A, the highest ripple is 40mVp-p. And when the output is 12V0A and 20V0A, the lowest ripple is 16mVp-p.

When loaded, at 220V 50Hz, when the output is 15V2A and 15V3A, the highest ripple is 32mVp-p. And when the output is 9V2A, 12V2A, 12V3A and 20V2.25A, the lowest ripple is 16mVp-p.

At 110V 60Hz, when the output is 15V2A and 15V3A, the highest ripple is 32mVp-p. And when the output is 5V3A, 9V2A, 12V2A, 12V3A and 20V2.25A, the lowest ripple is 16mVp-p.

Temperature Test

As we mentioned, in the process of converting AC to DC, energy will be converted into heat. We'll put it into a 25°C (77℉) thermotank throughout the test and let it run for an hour with the power of 20V2.25A 45W.

An hour later, the maximum temperature on the A and B sides was 60.8°C (141.44℉) under 220V 50Hz.

And the maximum temperature on the C and D sides was 55.6°C (132.08℉).

An hour later, the maximum temperature on the A and B sides was 58.7°C (137.66℉) under 110V 60Hz.

And the maximum temperature on the C and D sides was 62°C (143.6℉).

This is the summarized data.

Here is the histogram.

Summary of ChargerLAB

The new UGREEN 45W dual-port GaN charger with a compact and portable size, which has a maximum output power of 45W, supports 25W+20W fast charging for dual devices simultaneously.

The two USB-C ports support FCP, SCP, QC3.0/4+, PD3.0 and PPS fast charging protocols, etc., five fixed PDOs of 5V3A / 9V3A / 12V3A / 15V3A / 20V2.25A and one PPS of 3.3-11V4.05A.

Review of UGREEN 45W Dual-port GaN Charger CD294