Real-World Battery Endurance of Samsung’s Premium Tablet

Samsung’s latest flagship tablet, the Galaxy Tab S11 Ultra, has now undergone several independent battery life tests, revealing how well its massive 11,600mAh battery performs under real-world conditions. While Samsung officially claims up to 23 hours of video playback, actual results from hands-on testing suggest more practical endurance depending on usage patterns and brightness levels.

In typical day-to-day performance tests, the Galaxy Tab S11 Ultra delivers impressive but realistic results. During web browsing tests conducted at moderate brightness, the tablet lasted roughly 10 hours before needing a recharge. Video playback endurance came in at about 8 to 9 hours, depending on the resolution and brightness settings. For gaming, which puts heavier stress on the processor and display, the tablet managed around 11 hours on average before the battery dipped below 10%. These results indicate solid all-day usability for most users, especially those combining productivity, media, and casual gaming tasks.

Charging performance is another key strength of the Galaxy Tab S11 Ultra. With support for 45W fast charging, the device can fully recharge from 0% to 100% in approximately 90 minutes. Partial top-ups are even quicker, with a 30-minute charge restoring nearly 40% battery. This makes it an efficient option for professionals who rely on their tablet for long work sessions or travel. The device’s charging optimization features also help protect battery health over time, reducing wear from constant high-speed charging.

Samsung’s use of the MediaTek Dimensity 9400+ processor also contributes to better power efficiency compared to the previous generation. Combined with the adaptive refresh rate of the 14.6-inch Dynamic AMOLED 2X display, the system automatically lowers the refresh rate during static content or reading, saving battery life without affecting performance. Users who primarily use the tablet for productivity tasks or document editing can easily stretch a single charge through a full day of use.

While the Tab S11 Ultra’s massive screen offers stunning visuals, it remains one of the biggest power consumers in the device. The 120Hz refresh rate and high brightness levels, especially under HDR content, can drain the battery faster than lower refresh rate tablets. In balanced mode, however, users report excellent endurance that competes closely with high-end iPads and premium Windows tablets. Power-saving profiles in One UI 8 also allow users to limit performance or reduce background processes to extend usage time even further.

In mixed-use testing that included streaming, note-taking with the S Pen, browsing, and light gaming, the Galaxy Tab S11 Ultra comfortably lasted between 12 to 14 hours before requiring a recharge. That’s enough to cover a full workday or a long flight without reaching for the charger. The tablet also supports standby optimization, ensuring minimal battery drain when left idle, which makes it ideal for those who use it intermittently throughout the day.

Overall, the Samsung Galaxy Tab S11 Ultra’s battery life strikes a strong balance between performance and endurance. While it doesn’t break records in total longevity due to its massive display, it still offers reliable, all-day use backed by rapid charging and power-efficient hardware. For creative professionals, students, and travelers, it delivers dependable battery performance that complements its high-end capabilities, ensuring it stays ready for both productivity and entertainment without compromise.

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