We subjected the Samsung Galaxy S24 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: 4000mAh
- 25W charger (not included)
- 6.2-inch OLED display, 1080 x 2340, 120 Hz
- Qualcomm Snapdragon 8 Gen 3 (4nm)
- Tested ROM/RAM combination: 128GB + 8GB
Pros
- Great battery life during video streaming and gaming
- Low discharge currents when testing with the screen on
- Decent wireless charging time
- Very low residual power drawn from the wired charger
Against
- Poor battery life when listening to music and making calls
- Poor battery life during outdoor tests
The overall battery score of the Samsung Galaxy S24 was slightly lower than that of its predecessor Samsung Galaxy S23, due to a small decrease in battery life and efficiency performance.
Featuring a slightly larger battery than its predecessor and the latest Snapdragon chipset, the Galaxy S24’s battery life was below average, lasting just over 2 days when used moderately. In specific usage tests, results were variable. Battery performance was also quite impressive when tested with the screen on, such as when streaming video and gaming. However, the device had issues with music streaming and most outdoor activities.
The charging experience was mixed, but overall below average and little changed from the S23’s performance. Wired charging took longer than average, 1 hour and 39 minutes, to fully recharge the battery. But wireless charging was slightly faster than average: 2 hours and 15 minutes. In any case, the battery life recovered after a quick 5-minute boost was low, around 3 hours and 20 minutes, which contributed to the below-average charging score.
In terms of efficiency, the 4000 mAh battery of the Galaxy S24 can be considered well optimized in several aspects if we look at its discharge currents. The relatively low discharge currents at idle with the screen on, video streaming and gaming supported the generally good battery life. But the residual power consumption of wireless media is very high, which reduces the efficiency of the device.
For a device in the Premium price range ($600 – $799), the Samsung Galaxy S24 ranked slightly below average in our database, held back by battery life results and an inconsistent charging experience.
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 S24 | 4000mAh | 25W (not included) |
15W | 2X dynamic AMOLED 1080 x 2340 |
Qualcomm Snapdragon 8 Gen 3 |
| Samsung Galaxy S23 | 3900mAh | 25W (not included) |
15W | AMOLED 1080 x 2340 |
Qualcomm Snapdragon 8 Gen 2 |
| Apple iPhone 15 | 3367 mAh | 20W (not included) |
15W | AMOLED Retina XDR 1179 x 2556 |
Apple A16 Bionic |
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.
68 hours
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
102
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
102
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
115
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
116
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 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.
Quick push
114
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
126
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
134
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
122
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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