Introduction

ChargerLAB tested the charging performance of the Google Pixel 7 Pro before. And this time, we got a new Google Pixel 8 Pro which is equipped with the Tensor G3 processor. It is equipped with the Google AI and a 5050mAh battery. It can support 30W wired charging. It also passes Qi certification. So, we decided to test the performance of wired and wireless charging this time.

Product Appearance

It has a 6.7-inch OLED display with a resolution of 2992*1344. And it supports up to 1600 nit.

Its rare camera module consists of a main camera, an ultra-wide-angle camera, and a telephoto camera. And the front camera has 10.5MP.

There are two speakers and a USB-C port at the bottom.

Since it does not come with a charger, we used a third-party charger to test the wired charging power. The power is about 25W.

Compatibility Test

Next, let’s see its charging compatibility.

Third-party Chargers

We will use about a hundred chargers to charge the Google Pixel 8 Pro to test its charging compatibility.

The charging power is about 9.02V 2.83A 25.51W when charging the Google Pixel 8 Pro with the MOMAX 140W charger.

Summarizing the data into a table, all the chargers can reach 9V, and most chargers can reach a charging power of more than 20W.

We know from the bar chart, only the Huawei 40W charger cannot charge it. And more than half of the third-party chargers have a charging power above 20W.

Wired Charging Test

First, let's take a look at its wired charging performance.

Full Charging Test

We use the Google 65W charger to fully charge the Google Pixel 8 Pro. And put them into a 25°C (77℉) thermotank throughout the test. Here is the charging curve made by the PC software of KM002C.

The voltage is always around 9V. The charging curve can be divided into three parts. In the first part, the power was around 27W for the first 38 mins. Then, the power drops to 12W. Then the power drops to almost zero, but the current obviously fluctuates twice. It takes 1 hour and 36 mins to be fully charged.

We plot it into a curve to see how fast it can be. The Google 65W charger can charge the Google Pixel 8 Pro to 50% in 28 mins and 80% in 46 mins, and it reaches 100% in 1 hour and 36 mins.

Temperature Test

We also recorded the highest temperature on the front and back after charging for 10 mins, 20 mins, and 30 mins.

10 Mins Charging

After 10 mins of charging, the maximum temperature on the front is 33 ℃ (91.4 ℉).

And the back is 33.6 ℃ (92.48 ℉). 

20 Mins Charging

After 20 mins of charging, the maximum temperature on the front slightly increases to 35.4 ℃ (95.72 ℉).

And the back temperature is 36 ℃ (96.8 ℉). 

30 Mins Charging

After 30 mins of charging, the maximum temperature on the front is 36.4 ℃ (97.52 ℉).

And the back is 36.7 ℃ (98.06 ℉).

Creating a bar chart to represent the data, it is evident that the temperature increases with charging time. And the temperature on the back is always higher than on the front. The maximum temperature was 36.7 ℃ (98.06 ℉) at 30 mins.

Wireless Charging Test

Next, we will use a variety of different wireless chargers and a hundred-watt charger through the tests.

The charging power is about 10.97V 1.24A 13.57W, when using vivo 80W wireless charging stand to charge it.

Move to the vivo 50W wireless charging stand, the charging power is about 11.98V 1.26A 15.06W.

The charging power is about 9.1V 1.38A 12.55W, when using Huawei 50W wireless charging stand to charge it.

Replace the charging stand with the Apple 15W MagSafe charger, the power drops to about 8.98V 0.58A 5.24W.

The power rises about 8.98V 1.37A 12.28W, when using Baseus 15W wireless charger to charge it.

The last is the Benks 15W wireless charger, and the charging power drops to about 8.98V 0.58A 5.23W.

Full Charging Test

Next, we'll use the Apple 15W MagSafe charger and vivo 50W wireless charging stand to fully charge the Google Pixel 8 Pro.

They will be put into a 25°C (77℉) thermotank throughout the test. Here is the charging curve made by the PC software of KM003C.

First, let’s take a look at the charging curve when using the Apple MagSafe charger.

The voltage is always around 9V. The charging curve can be divided into three parts. In the first part, the power stayed at 5W for the first 6 mins. Then, the power rises to 6.2W until 5 hours and 7 mins. And the power slowly drops to almost zero. It takes 5 hours and 32 mins to be fully charged. The charging speed is very slow.

We plot it into a curve to see the charging speed. The Apple MagSafe charger can charge the Google Pixel 8 Pro to 50% in 2 hours and 41 mins and 80% in 4 hours and 17 mins, and it reaches 100% in 5 hours and 32 mins.

Let’s take a look at the charging performance of the vivo 50W wireless charging stand.

The voltage is always around 12V but fluctuates. The charging curve can be divided into three parts. In the first part, the power stayed at 7W for the first 4 mins. Then, the power rises to 14W until 2 hours and 1 min. And the power slowly drops to almost zero. It takes 2 hours and 44 mins to be fully charged.

We plot it into another curve to see how fast it can be. The vivo 50W wireless charging stand can charge the Google Pixel 8 Pro to 50% in 1 hour and 12 mins and 80% in 1 hour and 54 mins, and it reaches 100% in 2 hours and 44 mins. The charging speed is much faster than Apple MagSafe charger.

Temperature Test

We also measured the temperature during the full charging test. Let’s take a look at the temperature of the phone after one hour of charging.

We can't measure the actual temperature of the phone because they are tightly stuck together, so we test the temperature of the contact. After 1 hour of charging, the temperature of the contact between the phone and the MagSafe charger is 35.2 ℃ (95.36 ℉). At this time, the charging power is about 6.2W.

After 1 hour of charging, the temperature of the phone is 31.6 ℃ (88.88 ℉). The temperature is lower than that of the MagSafe charger. And the charging power at this time is about 14W, which is about twice that of the MagSafe charger. So the vivo 50W wireless charging stand performs better.

Reverse Charging Test

Next is the reverse charging test. We have also done reverse charging tests on iPhone 15 before.

Use it to wire reverse charge the AirPods Pro, the output power is about 4.86V 0.36A 1.77W.

Replace the AirPods Pro with Redmi K60, the power is about 4.8V 0.89A 4.28W.

Summary of ChargerLAB

The Google Pixel 8 Pro has a battery capacity of 5050mAh. And it's compatible with PD, QC, Qi protocols. Its wired and wireless charging continue the performance of the previous generation. 

But the charging speed is not fast, almost the same as Apple. Since wired charging is significantly faster than wireless charging. The wired charging is more recommended. But if you insist to charge it wirelessly, we recommend using a high-power wireless charger with heat dissipation to ensure wireless charging speed.

Related Articles：
1. 5000mAh Battery & 23W Charging | Charging Review of Google Pixel 7 Pro
2. Google Pixel 7 Pro | ChargerLAB Compatibility 100 Reveals Charging Details
3. Teardown of Unreleased Google 65W Mini Charger