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DisplayWe put the Google Pixel 8 through our rigorous DXOMARK Battery test suite to measure its performance in autonomy, charging and efficiency. In these test results, we will break down how it fared in a variety of tests and several common use cases.
Overview
Key specifications:
- Battery capacity: 4575 mAh
- 30W charger (not included)
- 6.2-inch, 1080 x 2400, 120 Hz, OLED display
- Google Tensor G3 (4 nm)
- Tested ROM / RAM combination: 256 GB + 8 GB
Scoring
Sub-scores and attributes included in the calculations of the global score.
Google Pixel 8
Key performances
These key points are derived from the lab measurements during testing and do not figure into the overall score. The lab measurements, however, are used for the overall score.
131st
26th
Pros
- Good autonomy when gaming and streaming videos
- Low residual consumption of the wired charger
- Low discharge current when gaming
Cons
- Poor autonomy when calling in both indoor and outdoor tests
- High consumption when streaming music
- Long wireless charging time (at 3 hours and 20 minutes)
The Google Pixel 8’s battery performance outperformed that of the Google Pixel 7 thanks to an improved charging experience for its larger battery.
But when it came to autonomy, the Pixel 8 remained below the average of our entire database, lasting slightly more than 2 days when used moderately. In usages tested separately, autonomy showed some better results, especially when gaming and streaming videos. However, the autonomy was poor when calling and streaming music, and was average for most outdoor usages.
The Pixel 8 showed improvement in wired and wireless charging times over its predecessor. It took the Pixel 8 device 1 hour and 33 minutes to fully replenish the battery when using a wired charger and 3 hours and 20 minutes wirelessly; that’s around 30 minutes faster than the Pixel 7. But these charging times are still longer than average when compared with other devices. Moreover, a quick 5-minute charge provided only 3 hours and 20 minutes of additional autonomy, which is in the lower part of our database.
Charge efficiencies for both wired and wireless were below average, although residual consumptions were low, especially when wired, whether the fully charged device was still plugged in or not. Discharge currents were globally higher than average. Although the device showed low consumption when gaming and streaming videos, it consumed a lot of power when calling and streaming music, indicating that the device was not well-optimized.
Compared with Premium devices ($600-$799) in our database, the Google Pixel 8 ranked below average. Its autonomy was only slightly below average, but its charging experience and efficiency remained poor for this segment.
Test Summary
About DXOMARK Battery tests: For scoring and analysis in our smartphone battery reviews, DXOMARK engineers perform a variety of objective tests over a week-long period both indoors and outdoors. (See our introductory and how we test articles for more details about our smartphone Battery protocol.)
The following section gathers key elements of our exhaustive tests and analyses performed in DXOMARK laboratories. Detailed performance evaluations under the form of reports are available upon request. Do not hesitate to contact us.
| Battery | Charger | Wireless | Display | Processor | |
|---|---|---|---|---|---|
| Google Pixel 8 | 4575mAh | 27W (not included) |
18W | OLED 1080 x 2400 |
Google Tensor G3 |
| Google Pixel 7 | 4355mAh | 21W (not included) |
21W | OLED 1080 x 2400 |
Google Tensor G2 |
| Xiaomi 13T | 5000mAh | 67W (not included) |
- | OLED 1220 x 2712 |
Mediatek Dimensity 8200 Ultra |
Autonomy
Google Pixel 8
195
Autonomy score is composed of three performance sub-scores: Home / Office, On the go, and Calibrated use cases. Each sub-score comprises the results of a comprehensive range of tests for measuring autonomy in all kinds of real-life scenarios.
Battery Life (moderate)
134th
Battery Life (moderate)
24th
Home/Office
Google Pixel 8
221
A robot housed in a Faraday cage performs a set of touch-based user actions during what we call our “typical usage scenario” (TUS) — making calls, video streaming, etc. — 4 hours of active use over the course of a 16-hour period, plus 8 hours of “sleep.” The robot repeats this set of actions every day until the device runs out of power.
On the go
Google Pixel 8
195
Using a smartphone on the go takes a toll on autonomy because of extra “hidden” demands, such as the continuous signaling associated with cellphone network selection, for example. DXOMARK Battery experts take the phone outdoors and perform a precisely defined set of activities while following the same three-hour travel itinerary (walking, taking the bus, the subway…) for each device
Calibrated
Google Pixel 8
198
For this series of tests, the smartphone returns to the Faraday cage and our robots repeatedly perform actions linked to one specific use case (such as gaming, video streaming, etc.) at a time. Starting from an 80% charge, all devices are tested until they have expended at least 5% of their battery power.
Charging
Google Pixel 8
218
Charging is fully part of the overall battery experience. In some situations where autonomy is at a minimum, knowing how fast you can charge becomes a concern. The DXOMARK Battery charging score is composed of two sub-scores, (1) Full charge and (2) Quick boost.
Full charge
Google Pixel 8
224
Full charge tests assess the reliability of the battery power gauge; measure how long and how much power the battery takes to charge from zero to 80% capacity, from 80 to 100% as shown by the UI, and until an actual full charge.
Charging Time 0-80%
89th
Charging Time 0-80%
25th
Quick boost
Google Pixel 8
212
With the phone at different charge levels (20%, 40%, 60%, 80%), Quick boost tests measure the amount of charge the battery receives after being plugged in for 5 minutes. The chart here compares the average autonomy gain from a quick 5-minute charge.
Efficiency
Google Pixel 8
154
The DXOMARK power efficiency score consists of two sub-scores, Charge up and Discharge rate, both of which combine data obtained during robot-based typical usage scenario, calibrated tests and charging evaluation, taking into consideration the device’s battery capacity. DXOMARK calculate the annual power consumption of the product, shown on below graph, which is representative of the overall efficiency during a charge and when in use.
Charge up
Google Pixel 8
205
The charge up sub-score is a combination of four factors: the overall efficiency of a full charge, related to how much energy you need to fill up the battery compared to the energy that the battery can provide; the efficiency of the travel adapter when it comes to transferring power from an outlet to your phone; the residual consumption when your phone is fully charged and still plugged into the charger; and the residual consumption of the charger itself, when the smartphone is disconnected from it. The chart here below shows the overall efficiency of a full charge in %.
Discharge
Google Pixel 8
194
The discharge subscore rates the speed of a battery’s discharge during a test, which is independent of the battery’s capacity. It is the ratio of a battery’s capacity divided by its autonomy. A small-capacity battery could have the same autonomy as a large-capacity battery, indicating that the device is well-optimized, with a low discharge rate.
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