We put the Honor X9b 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.
- Battery capacity: 5800 mAh
- 35W charger (not included)
- 6.78-inch, 1200 x 2652, 120 Hz, OLED display
- Qualcomm Snapdragon 6 Gen（SM6450） (4 nm)
- Tested ROM / RAM combination: 256 GB + 8 GB
Sub-scores and attributes included in the calculations of the global score.
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.
- More than three days of autonomy in moderate use case
- Outstanding autonomy in both home/office and on-the-go test cases
- Very low discharging current during the night when in idle
- Below-average charging performance, taking a long time to reach a full charge
- Discrepancy between the actual battery capacity, and the displayed capacity. (17% measured, 20% displayed)
- 8.4% of the total capacity is actually charged after 100% displayed on screen
- Poor autonomy regained from quick-boost charging
The Honor X9b battery showed an outstanding autonomy and efficiency performance, finding itself among the top 10 devices in our database. Equipped with a robust 5800 mAh battery, it delivered over three days of battery life when used moderately. Moreover, the device exhibited excellent battery performance whether used lightly or intensely. Light usage yielded more than four and a half days, and intense usage garnered nearly two days of autonomy. In all the separated test cases, the Honor X9b showed impressive autonomy, especially in video streaming, idle screen-on, and music streaming under both Wi-Fi and 4G conditions.
Charging performance was the only area where the Honor X9b performed below average. With the 35W charger, the device took more than 2 hours to arrive at a full charge. Furthermore, when the phone displayed that its battery was 100% charged, in reality only 91.6% of the full charge was drawn from the plug.
The Honor X9b attained a high score in efficiency, securing a prominent position in our battery ranking. This was primarily attributed to its consistently low discharging current in nearly all test cases. However, it is worth noting that the adapter efficiency, in comparison to other devices, appeared to be relatively moderate.
When compared to other devices in the advanced segment, the Honor X9b demonstrated exceptional overall battery life and the high degree of optimization that helped it secure a spot in the top three positions within our battery ranking.
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.
1200 x 2652
|Qualcomm Snapdragon 6 Gen1|
1080 x 2400
|Qualcomm Snapdragon 695|
|Xiaomi Redmi Note 12 5G||5000mAh||33W
1080 x 2400
|Qualcomm Snapdragon 4 Gen 1|
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)
Battery Life (moderate)
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
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
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 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 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%
Charging Time 0-80%
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.
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.
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 %.
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.