Samsung fans are eagerly waiting for the next big thing in audio. New reports suggest the wait for the Galaxy Buds 4 and Galaxy Buds 4 Pro might bring some mixed news regarding battery life. A fresh leak has surfaced online that details the exact battery capacities for the upcoming wireless earbuds. It appears the tech giant is making some interesting adjustments to the power cells inside their next flagship audio devices.
The information comes from code references found within the One UI 8.5 software. This discovery gives us a clear look at what to expect under the hood. While the Pro model is getting a nice boost, the standard model seems to be taking a step back in terms of raw battery size. This has sparked a debate among tech enthusiasts about efficiency versus capacity.
New Battery Capacities Revealed
The latest data indicates a clear divergence in strategy between the two models. According to the leak spotted by Android Authority, the standard Galaxy Buds 4 will feature a 42mAh battery. This number might concern some users who prioritize long listening sessions without a recharge. It suggests a focus on a smaller form factor or perhaps reliance on better software optimization.
On the flip side, the premium Galaxy Buds 4 Pro is getting a power upgrade. The leak claims these earbuds will come with a 57mAh battery. This is a solid increase that should appeal to power users. The Pro model usually handles more demanding tasks like advanced Active Noise Cancellation (ANC) and high-fidelity audio processing. A larger battery here is a welcome addition to handle those extra features.
Here is a quick breakdown of the leaked specs:
- Galaxy Buds 4: 42mAh battery capacity
- Galaxy Buds 4 Pro: 57mAh battery capacity
- Source: One UI 8.5 code references
These numbers are critical because they define the physical limits of how long the device can run. However, mAh is just one part of the story. The actual battery life will depend heavily on the processor efficiency and how the software manages power consumption during use.

Samsung Galaxy Buds 4 Pro battery leak comparison chart
Comparing Generations of Power
It is helpful to look at how these new numbers stack up against previous models. When we compare the upcoming Galaxy Buds 4 to the Galaxy Buds 3, we see a downgrade in capacity. The Galaxy Buds 3 shipped with a 48mAh battery. The new model drops this by about 6mAh. This reduction is surprising for a newer generation product.
The Pro story is more positive but still interesting when looking further back. The Galaxy Buds 3 Pro had a 53mAh battery. The move to 57mAh in the Galaxy Buds 4 Pro is a definitive improvement over its direct predecessor. It shows Samsung is trying to squeeze more juice into their top-tier offering.
However, older models still hold the crown for raw size. The Galaxy Buds 2 Pro featured a massive 61mAh battery. Despite the new Pro model getting a boost over the version 3, it still has not quite reached the peak capacity we saw in the version 2 era.
Comparison Table: Battery Capacity Across Generations
| Model | Battery Capacity | Status |
|---|---|---|
| Galaxy Buds 4 | 42mAh | Upcoming |
| Galaxy Buds 3 | 48mAh | Previous Gen |
| Galaxy Buds 4 Pro | 57mAh | Upcoming |
| Galaxy Buds 3 Pro | 53mAh | Previous Gen |
| Galaxy Buds 2 Pro | 61mAh | Older Gen |
Efficiency Over Raw Power
A smaller battery does not always guarantee shorter listening time. Samsung is likely betting big on chipset efficiency for the Galaxy Buds 4 series. Modern audio processors are becoming incredibly power efficient. They can do more work with less energy. This means a 42mAh battery in 2025 might last just as long as, or longer than, a 48mAh battery from previous years.
Optimizations in Bluetooth technology also play a massive role. The new earbuds will likely utilize the latest Bluetooth standards which consume less power during standby and transmission. Additionally, the integration with the upcoming Galaxy S26 series suggests deep software optimizations.
The Galaxy S26 launch is expected to bring new AI features that manage device connections smarter than ever. If the earbuds can intelligently sleep or lower power usage when not actively streaming, users might not notice the physical reduction in battery size. It is a balancing act between making the earbud smaller and lighter versus keeping it powered for long flights or commutes.
Fresh Design and Feature Rumors
Battery life is not the only thing leaking about these devices. Recent reports have shed light on the physical design of the “Pro” variant. Leaked images hint at a refined aesthetic that includes a new metal grille. This is not just for looks. A metal grille adds durability and can improve the acoustic chamber properties for better sound quality.
Another exciting development concerns the charging case. Finding lost earbuds is a common headache for everyone. Reports suggest the new charging case will have a built-in speaker or distinct functionality to help you locate your phone with a simple button press on the case itself. This two-way finding feature would be a massive quality-of-life upgrade for the Samsung ecosystem.
The Galaxy Buds 4 series is expected to launch alongside the Galaxy S26 lineup next year. While pricing remains a mystery, these early details paint a picture of a refined product line. Samsung seems to be focusing on premium features for the Pro and perhaps a more compact design for the standard model.