We subjected the Oppo Reno8 5G to our rigorous SBMARK battery test suite to measure its performance in terms of range, charging and efficiency. In these test results, we will analyze how it fared in a variety of tests and several common use cases.
Overview
Key specs:
- Battery capacity: 4500mAh
- 80W charger (included)
- 6.43-inch, 1080 x 2400, 90Hz OLED display
- MediaTek 1300 size (6 nm)
- Tested ROM / RAM combination: 256GB + 8GB
Pros
- Fair autonomy during a typical usage scenario, with excellent night management
- Decent performance during calibrated tests
- Very fast charging
- 7 hours and 43 minutes of battery life recovered on average after charging the device for 5 minutes
- Excellent charging efficiency
- Low discharge currents overall
versus
- Poor call autonomy
- Poor battery life when testing on the go, especially during calls
- High residual power consumption of the charger when the device is fully charged and still connected
- High discharge current during the call
The Oppo Reno8 5G achieved an excellent overall score thanks to its very well balanced performance, which places it among our top performers. Battery life was decent during the typical use scenario test, with very low discharge currents during the day and night (only 0.67% lost on average per night). In calibrated mode the device performed well, with an autonomy always above average, except for calls, where it seemed to struggle.
Outdoor performance was poor, with below-average runtimes in all use cases.
The 80W charger, on the other hand, provided excellent charging performance, filling the 4500 mAh battery in just 33 minutes and 25 seconds. Users who give the Oppo Reno8 5G a 5-minute quick charge can expect to get an average of 7 hours and 43 minutes of additional battery life.
In addition to being fast, the charging was also efficient, while the efficiency of the power supply was average. However, the residual consumption of the charger when the device was fully charged and still connected to the charger was above average, which happens regularly with powerful power adapters like this one.
In general, all discharge currents were low, which means that the device was well optimized. However, during the call, the discharge current was above average.
Compared to devices in the same price range ($ 400 to $ 599), the Oppo Reno8 5’s overall score is excellent. The autonomy, charging and efficiency scores were above average, although the secondary score on the go was below average.
Test summary
Information on SBMARK battery tests: For the score and analysis in our smartphone battery reviews, SBMARK engineers perform a series of objective tests over a period of one week both indoors and outdoors. (See our introductory article and how we test articles for more details on our Smartphone Battery Protocol.)
The following section collects the key elements of our exhaustive tests and analyzes performed in SBMARK laboratories. Detailed performance evaluations in the form of reports are available upon request. Do not hesitate to contact us.
| Battery | Battery charger | wireless | Screen | Processor | |
|---|---|---|---|---|---|
| Oppo Reno8 5G | 4500 mAh | 80 W (not included) |
– | AMOLED 1080 x 2400 |
Media library size 1300 |
| Google Pixel 6 | 4614 mAh | 30 W (not included) |
21W | OLED 1080 x 2400 |
Google tensor |
| Samsung Galaxy A53 5G | 5000 mAh | 25W (not included) |
– | AMOLED 1080 x 2400 |
Samsung Exynos 1280 |
| Apple iPhone SE (2022) | 2018 mAh | 18W (not included) |
15W | IPS LCD 750 x 1334 |
Apple A15 Bionic |
Autonomy
70
Wiko Power U30
Wiko Power U30
How the autonomy score is composed
The range score is made up of three performance sub-scores: stationary, moving, and calibrated use cases. Each sub-score includes the results of a full range of tests to measure autonomy in all kinds of real-life scenarios.
85 hours
Light use
Active: 2h30 / day
58 hours
Moderate use
Active: 4 hours a day
35 hours
Intense use
Active: 7 hours a day
Stationary
81
Viva Y72 5G
Viva Y72 5G
A robot housed in a Faraday cage performs a series of touch-based user actions during what we call our “typical use scenario” (TUS) – making calls, streaming video, etc. – 4 hours of active use over a 16-hour period, plus 8 hours of “sleep”. The robot repeats this series of actions every day until the device is discharged.
In movement
55
Samsung Galaxy M51
Samsung Galaxy M51
Using a smartphone on the go puts a strain on autonomy due to additional “hidden” needs, such as the continuous signaling associated with the selection of the cellular network. SBMARK Battery experts take the phone outdoors and perform a well-defined set of activities while following the same three-hour travel itinerary (on foot, by bus, by subway …) for each device
Calibrated
65
Samsung Galaxy M51
Samsung Galaxy M51
For this series of tests, the smartphone returns to the Faraday cage and ours robots repeatedly perform actions related to a specific use case (such as games, video streaming, etc.) at a time. Starting at an 80% charge, all devices are tested until they have consumed at least 5% of the battery charge.
Reload
104
Realme GT Neo 3
Realme GT Neo 3
How the Charge score is composed
Charging is completely part of the overall battery experience. In some situations where autonomy is minimal, knowing how fast you can charge becomes a problem. The SBMARK battery charge score consists of two secondary scores, (1) Full charge and (2) Quick boost.
Full charge
101
Realme GT Neo 3
Realme GT Neo 3
Full charge tests evaluate the reliability of the battery charge indicator; measure how long and how much energy the battery takes to charge from zero to 80% capacity, 80 to 100% as shown by the user interface, and up to an actual full charge.
The charging curves, in wired and wireless mode (if available) show the evolution of the battery level indicator as well as the energy consumption in watts during the charging phases towards full capacity.
The full charge time graph breaks down the time it takes to reach 80%, 100% and full charge.
Fast thrust
98
Realme GT Neo 3
Realme GT Neo 3
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 graph here compares the average runtime gain from a 5 minute quick charge.
Efficiency
97
Apple iPhone 13 Pro
Apple iPhone 13 Pro
How the efficiency score is composed
The SBMARK energy efficiency score consists of two secondary scores, Charge up and Discharge rate, which combine both data obtained during a typical use scenario based on robots, calibrated tests and charge evaluation, taking into account the battery capacity of the device . SBMARK calculates the annual energy consumption of the product, shown in the graph below, which is representative of the overall efficiency during charging and in use.
To load
84
Nubia RedMagic 7 Pro
Nubia RedMagic 7 Pro
The secondary charge score is a combination of four factors: the overall efficiency of a full charge, relative to the amount of energy needed to fill the battery versus the energy the battery can provide; the efficiency of the travel adapter when it comes to transferring power from an outlet to the phone; the residual consumption when the phone is fully charged and still connected to the charger; and the residual consumption of the charger itself, when the smartphone is disconnected from it. The graph below shows the overall efficiency of a full charge in%.
Discharge
96
Apple iPhone 13 Pro
Apple iPhone 13 Pro
The discharge secondary score evaluates the discharge rate of a battery during a test, which is independent of the battery capacity. It is the ratio of the capacity of a battery divided by its autonomy. A small capacity battery may have the same runtime as a large capacity battery, indicating that the device is well optimized, with a low discharge rate.
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