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We put the Samsung Galaxy A15 5G 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: 5000 mAh
- 25W charger (not included)
- 6.5-inch, 1080 x 2340, 90 Hz, OLED display
- MediaTek Dimensity 6100+ (6 nm)
- Tested ROM / RAM combination: 128 GB + 4 GB
Scoring
Sub-scores and attributes included in the calculations of the global score.
Samsung Galaxy A15 5G
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.
66th
6th
Pros
- Excellent autonomy when watching videos on WiFi or in offline conditions
- Impressive autonomy when used in outdoor conditions
- Extremely low residual power drain when the device is unplugged
- Low discharge currents during the night
Cons
- High discharging currents when listening to music and watching videos under 4G conditions
- Not much autonomy regained from a 5-minute charge boost
- More than 1 hour and 40 minutes required to fully charge the battery
The Samsung Galaxy A15 5G delivered a decent performance in our battery experience test, showing improvements over its predecessor, the Galaxy A14 5G.
Under moderate usage, the Galaxy A15 5G’s autonomy lasted nearly three days, placing it in the top half of our database. The device showed minimal battery drain of only 0.33% per night during indoor use. On-the-go results were good, whether browsing social apps, taking photos, or using navigation. Additionally, it demonstrated excellent autonomy for activities such as video streaming over Wi-Fi, gaming, idling, and calling. However, autonomy was below average when watching videos and listening to music over 4G.
The Samsung Galaxy A15 5G supports up to 25W charging, achieving a full charge in under 2 hours, which is relatively long compared to other devices we tested. The charger’s lower power resulted in only 3.5 hours of autonomy gained from a 5-minute quick charge, which is below average in our database.
The device’s efficiency score is generally solid. The overall charge-up efficiency exceeds 78%, placing it in the top half of our database, while adapter efficiency is average. The residual power drain is very low whether the device is plugged in or not. Discharging currents are typically below average, except when listening to music and watching videos under 4G conditions.
Among devices in the Essential segment (< $199), the Samsung Galaxy A15 5G ranks among the best, thanks to its excellent autonomy and decent efficiency performance.
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 | |
|---|---|---|---|---|---|
| Samsung Galaxy A15 5G | 5000mAh | 25W (not included) |
- | AMOLED 1080 x 2340 |
MediaTek Helio G99 |
| Samsung Galaxy A15 LTE | 5000mAh | 25W (not included) |
- | AMOLED 1080 x 2340 |
MediaTek Helio G99 |
| Samsung Galaxy A14 5G | 5000mAh | 15W (not included) |
- | LCD 1080 x 2408 |
MediaTek Dimensity 700 |
Autonomy
Samsung Galaxy A15 5G
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)
27th
Battery Life (moderate)
6th
Home/Office
Samsung Galaxy A15 5G
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
Samsung Galaxy A15 5G
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
Samsung Galaxy A15 5G
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
Samsung Galaxy A15 5G
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
Samsung Galaxy A15 5G
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%
132nd
Charging Time 0-80%
6th
Quick boost
Samsung Galaxy A15 5G
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
Samsung Galaxy A15 5G
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
Samsung Galaxy A15 5G
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
Samsung Galaxy A15 5G
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.