Samsung Galaxy S26 Battery Specs: Which Model Is Getting a Major Upgrade?

Samsung has officially set the stage for its next generation of flagship smartphones. The tech giant recently confirmed that the Galaxy Unpacked 2026 event will take place on February 25, where the world will get its first official look at the new high-end lineup. While anticipation is building for various hardware and software enhancements, recent leaks have shed light on a specific area of interest for many users: battery life. Surprisingly, it appears that only one of the three upcoming models will see a physical increase in battery capacity this year.

The Galaxy S26: A Compact Powerhouse

The standard Galaxy S26 is the standout model in terms of raw capacity upgrades. Reports suggest it will transition from the 4,000mAh found in the previous generation to a more robust 4,300mAh cell. Even though the device is expected to sport a slightly larger 6.3-inch display, the combination of a higher capacity, a more power-efficient processor, and advanced OLED panel materials should result in a noticeable improvement in daily endurance. However, those hoping for faster refueling might be disappointed, as leaks indicate the base model will stick with 25W wired and 15W wireless charging.

Consistency for the Plus and Ultra Models

While the base model grows, the larger siblings are playing a game of consistency. The Galaxy S26+ is slated to retain its 4,900mAh battery, while the top-tier Galaxy S26 Ultra will likely keep its 5,000mAh capacity. While the sizes aren't changing, the charging technology is where the Ultra model might flex its muscles. Rumors point toward the Ultra supporting 60W wired charging and 25W wireless charging, offering a significant jump over the standard versions. The S26+ is expected to remain at 45W wired charging.

One important detail for accessory fans is the lack of built-in magnets for Qi2 across the board. This means that to utilize the latest magnetic wireless charging accessories, users will still need to invest in a specific magnetic case. Samsung has already opened pre-reservations in various regions, allowing eager fans to secure their spot for what promises to be one of the biggest tech launches of 2026.

Which Galaxy S26 model has the biggest battery?

The Galaxy S26 Ultra remains the leader in the series with a 5,000mAh battery, although it is not receiving a capacity increase over the previous year's model.

How much is the battery increasing on the base Galaxy S26?

The base Galaxy S26 is rumored to move from a 4,000mAh battery to a 4,300mAh battery, representing a 300mAh upgrade.

Will the Galaxy S26 series support faster charging?

The Galaxy S26 Ultra is expected to support 60W wired charging, while the S26+ will likely support 45W, and the standard S26 will remain at 25W.

Does the Galaxy S26 have Qi2 magnetic charging?

No, the upcoming series is not expected to include built-in magnets for Qi2, so a magnetic case will be required for those accessories.

When is the official launch date for the Galaxy S26?

Samsung has confirmed the Galaxy Unpacked 2026 event will take place on February 25, where all three models will be officially unveiled.

🔎 As we approach the official unveiling in late February, it is clear that Samsung is focusing on refining the user experience through efficiency rather than just larger components. While only the base Galaxy S26 gets a physical battery boost, the entire lineup stands to benefit from next-generation hardware that manages power more intelligently than ever before. Whether you are looking for the compact improvements of the S26 or the high-speed charging of the Ultra, the 2026 flagship season is shaping up to be a significant milestone for mobile technology.