We subjected the Xiaomi Redmi 12 5G to our rigorous SBMARK Battery test suite to measure its performance in terms of battery life, charging and efficiency. In the results of these tests, we will analyze how it performed in a series of tests and in several common use cases.
Overview
Key Specifications:
- Battery capacity: 5000mAh
- 18W charger (included)
- 6.79 inch LCD display, 1080 x 2460, 90 Hz
- Qualcomm Snapdragon 4 Gen 2 (4nm)
- Tested ROM/RAM combination: 128GB + 4GB
Pros
- Good battery life during video streaming and calls
- Low residual power consumption, especially when the phone is still connected to the charger
Against
- Only 2 hours of battery life recovered after a 5 minute charge
- Long charging time, taking more than 2 hours and 20 minutes
- Poor performance on the go, especially when using social apps
The battery performance of the Xiaomi Redmi 12 5G ranked at the bottom in the SBMARK database. The device is equipped with a 5000 mAh battery and a Snapdragon 4 Gen 2 chip. However, the overall battery life experience has shown a lot of room for improvement.
When used moderately, the battery life of the Xiaomi Redmi 12 5G lasted just under two and a half days, which is lower than average in our database. The poor battery life could be attributed to the relatively high night-time discharge current, which caused the device to lose more than 3% of its power every night. Furthermore, high consumption of social apps and games also drains the battery quickly. On the plus side, the device showed above-average battery life in 4G video streaming and calls in test cases.
The charging experience of the Xiaomi Redmi 12 5G leaves a lot of room for optimization. The device’s maximum charging power was limited to 18W, resulting in a charging time of 2 hours and 24 minutes. Furthermore, due to the limited maximum charging power, the battery life recovered from a 5-minute quick charge was only around 2 hours.
The adapter of the Xiaomi Redmi 12 5G demonstrated excellent residual efficiency, especially when the device was still connected to the charger. However, the overall charging efficiency of 72.9% is relatively low and thus the device ranked in the bottom half among our tested devices. In terms of discharge currents for the individual test cases, the performance was in line with their autonomy, but globally the Xiaomi Redmi 12 5G had higher than average discharge currents.
Compared to other devices in the Advanced price range, the Xiaomi Redmi 12 5G failed to outperform many devices due to its poor indoor use performance and lack of experience in all our test cases.
Test summary
Information on SBMARK battery tests: For scoring 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 introduction and how we test articles for more details on our smartphone battery protocol.)
The following section compiles key elements of our comprehensive testing and analysis performed in SBMARK laboratories. Detailed performance evaluations in the form of reports are available upon request. Do not hesitate to contact us.
| Drums | Battery charger | wireless | Screen | Processor | |
|---|---|---|---|---|---|
| XiaomiRedmi 12 5G | 5000mAh | 18W (not included) |
– | IPS LCD 1080 x 2460 |
Second generation Qualcomm Snapdragon 4 |
| Xiaomi Redmi Note 12 5G | 5000mAh | 33W (included) |
– | AMOLED 1080 x 2400 |
Qualcomm Snapdragon 4 Gen 1 |
| Nokia G425G | 5000mAh | 20W (not included) |
– | LCD screen 720×1612 |
Qualcomm Snapdragon 480+ 5G |
How the autonomy score is composed
The battery life score is made up of three performance subscores: Home/Office, On the Go, and Calibrated Use Cases. Each subscore includes the results of a full range of tests to measure battery life in all types of real-life scenarios.
71h
Light usage
Active: 2h30/day
49h
Moderate use
Active: 4 hours a day
31h
Intense use
Active: 7 hours a day
Home office
A robot housed in a Faraday cage performs a series of touch-based user actions during what we call our “Typical Usage Scenario” (TUS) (making calls, streaming video, etc.) – 4 hours of active use over the course of 16 hours. -a period of one hour, plus 8 hours of “sleep”. The robot repeats this series of actions every day until the device runs out of power.
In movement
114
Samsung Galaxy M51
Samsung Galaxy M51
Using a smartphone on the move puts a strain on battery life due to additional “hidden” needs, such as the continuous signaling associated with cellular network selection. SBMARK Battery experts take the phone outdoors and perform a series of well-defined activities following the same three-hour travel itinerary (walking, taking the bus, subway…) for each device
Calibrated
113
Samsung Galaxy M51
Samsung Galaxy M51
For this series of tests the smartphone returns to the Faraday cage and our bots repeatedly perform actions related to a specific use case (such as gaming, video streaming, etc.) at a time. Starting from an 80% charge, all devices are tested until they have consumed at least 5% of their battery charge.
In charge
88
Realme GT Neo 5 (240W)
Realme GT Neo 5 (240W)
How the charging score is made up
Charging is a full part of the overall battery experience. In some situations where battery life is at its lowest, knowing how fast you can charge becomes a concern. The SBMARK Battery Charging Score is made up of two sub-scores, (1) Full Charge and (2) Quick Boost.
Full charge
84
Realme GT Neo 5 (240W)
Realme GT Neo 5 (240W)
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, from 80 to 100% as shown by the user interface, and until actually fully charged.
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 time to full charge table breaks down the time needed to reach 80%, 100%, and full charge.
Quick push
ninety two
Realme GT Neo 5 (240W)
Realme GT Neo 5 (240W)
With the phone at different charge levels (20%, 40%, 60%, 80%), the Quick Boost tests measure how much charge the battery receives after being plugged in for 5 minutes. The graph here compares the average battery life gain with a 5 minute fast charge.
Efficiency
ninety two
Oppo Reno6 5G
Oppo Reno6 5G
How the efficiency score is composed
The SBMARK Energy Efficiency Score is composed of two sub-scores, charging speed and discharging speed, which combine both data obtained during a typical robot-based usage scenario, calibrated tests and charging evaluation, taking into account 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 a charge and when in use.
Charge Up
108
Nubia Red Magic 7 Pro
Nubia Red Magic 7 Pro
The charging subscore is a combination of four factors: the overall efficiency of a full charge, related to the amount of energy needed to fill the battery compared to the energy 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 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
85
Apple iPhone 14 Pro
Apple iPhone 14 Pro
The discharge subscore evaluates how quickly a battery discharges during a test, which is independent of the battery’s capacity. It is the ratio between the capacity of a battery divided by its autonomy. A small capacity battery may have the same battery life as a large capacity battery, indicating that the device is well optimized, with a low discharge rate.
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