Why the Galaxy Tab S12 Ultra's Battery Feels Stuck

If you were secretly hoping Samsung would finally give its flagship tablet a noticeably bigger battery, prepare for a reality check. New leaks suggest the Galaxy Tab S12 Ultra will ship with the exact same 11,600 mAh pack as the S11 Ultra — and likely the same 45W wired charging cap to match. Short version: endurance gains probably won’t come from raw capacity.

That decision raises questions. Is Samsung prioritizing thinness and thermals over longer runtimes? Or is this a supply-and-cost compromise as the company chases performance and premium materials elsewhere? Whatever the reason, users who expected a generational leap in battery life will be disappointed.

Meanwhile, the Tab S12+ appears to take a slightly different route. Sources claim it will come with a larger battery than the older Tab S10+ it replaces — a sensible move for a mid-cycle Plus model trying to stand out. Both tablets, according to the same information, should keep the same screen sizes as their predecessors: 14.6 inches for the Ultra and 12.4 inches for the Plus. No surprises there, but the unchanged dimensions help explain why Samsung might have stuck with the existing battery architecture.

Under the hood, the rumor mill points to MediaTek’s Dimensity 9500 as the chipset of choice. That’s notable: it’s a power-efficient performer, and pairing it with Android 17 and Samsung’s One UI 9 could deliver smoother experiences without a massive battery upgrade. Both the Tab S12+ and S12 Ultra are said to include a 12MP front camera and are likely to ship with the latest software out of the box.

Simpler headline: the S12 Ultra may feel familiar — and a touch underwhelming — in battery terms. But raw numbers don’t tell the whole story. Optimizations at the system level, display tuning, and charging strategies can still change how long these tablets last in daily use. Still, seeing an unchanged 11,600 mAh figure after a generation that also used that cell isn’t the messaging fans wanted to hear.

Samsung reportedly plans to unveil the new Tab S12 family later this year, possibly in September, following the cadence set by previous launches. Expect a tight rope walk: incremental hardware tweaks, fresh software, and a marketing push that tries to make familiar hardware feel like a meaningful upgrade. Personally, I’ll be watching for real-world battery tests — because specs sheets only tell half the story.