We subjected the Samsung Galaxy A15 LTE 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
- 25W charger (not included)
- 6.5 inch OLED display, 1080 x 2340, 90 Hz
- MediaTek Helio G99 (6nm)
- Tested ROM/RAM combination: 128GB + 4GB
Pros
- Impressive battery life performance in both indoor and outdoor use cases
- High adapter efficiency
- Very low discharge current during calls, video streaming and when idle
Against
- It takes more than 1.5 hours to fully charge the battery
- Very little autonomy recovered with a 5 minute boost charge
- Below average charging efficiency
The Samsung Galaxy A15 LTE demonstrated much improved battery performance in all use cases compared to the previous Samsung Galaxy A14 5G.
Featuring the same 5000mAh battery as the previous generation, the Samsung Galaxy A15 LTE lasted more than 3 days and 6 hours when used moderately, compared to 2.5 days for the A14 5G.
The A15 LTE’s outdoor performance was also quite impressive, and ranked among the best devices we’ve tested. In standardized use case tests, the battery life shown was very impressive for calls and watching videos in 4G conditions, although the battery life when listening to music was not as long-lasting compared to the competition.
The Samsung Galaxy A15 LTE supports charging up to 25W, which takes more than 1 hour and 40 minutes to fully charge the device. Additionally, the device struggled to regain much battery life on a 5-minute boost charge, getting under 4 hours, which ranks in the bottom half of our database.
The Samsung Galaxy A15 LTE has very good adapter efficiency, above 93.5%. However, the overall charging efficiency was 76%, which is below average. On the other hand, the device’s discharge currents were generally below or around average levels except when listening to music, meaning the device is well optimized.
Compared to other devices in the Essential segment (<$199), the Samsung Galaxy A15 LTE ranked among the best devices, thanks to its excellent battery life and great efficiency performance.
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 brings together 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 | |
|---|---|---|---|---|---|
| Samsung Galaxy A15 LTE | 5000mAh | 25W (not included) |
– | AMOLED 1080 x 2340 |
MediaTek Helio G99 |
| Honor X7b | 6000mAh | 35W (included) |
– | LCD screen 1080 x 2412 |
Qualcomm Snapdragon 680 |
| Samsung Galaxy A14 5G | 5000mAh | 15W (not included) |
– | LCD screen 1080 x 2408 |
MediaTek Dimensity 700 |
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.
113h
Light usage
Active: 2h30/day
78 hours
Moderate use
Active: 4 hours a day
48 hours
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
165
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
130
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
111
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
102
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 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 time to full charge table breaks down the time needed to reach 80%, 100%, and full charge.
Quick push
121
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
135
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
123
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
141
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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