The Galaxy Watch Ultra 2 is rumored to bring significant battery improvements, potentially offering multi-day performance for heavy users.
According to a report from Sammobile, the upcoming smartwatch may feature a rated battery capacity of 784mAh, which Samsung could market as around 800mAh.
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That represents a roughly 35% increase over the original Ultra's 590mAh battery.
In addition to the larger battery, the device is expected to be powered by Qualcomm's Snapdragon Wear Elite chipset.
While both this new chip and the previous Exynos W1000 are built on a 3nm process, the Snapdragon is said to be more efficient due to its smarter architecture and a dedicated low-power NPU.
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Leaks also provide details on the regular Galaxy Watch 9 series.
The 40mm model might get a 382mAh battery (marketed around 400mAh), a 23% improvement over the Watch 8.
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The 44mm version is tipped for 435mAh. Both are expected to support 10W wireless charging.
Official details remain under wraps, with a launch likely later in 2026.
If the rumors hold, Samsung appears focused on delivering longer battery life for GPS use, always-on displays, and intensive workouts.
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Real-world performance will depend on software optimization and usage patterns.
