Samsung’s next Galaxy Watch Ultra could bring the battery upgrade many users have been waiting for. The Galaxy Watch Ultra 2 is expected to launch in the coming weeks, and a new report suggests it may arrive with a much larger battery than the 2024 and 2025 models.
According to SamMobile, the Galaxy Watch Ultra 2 will use a battery with a rated capacity of 784mAh. Samsung could market this as an 800mAh typical capacity, which would make it around 35% larger than the 590mAh battery used in the current Galaxy Watch Ultra models.
A bigger battery could push the Ultra closer to three days
Samsung currently claims up to two days of battery life on the Galaxy Watch Ultra when users rely on features such as GPS training mode. If the reported battery upgrade is accurate, the Watch Ultra 2 could get much closer to three days of regular use, depending on display settings, workout tracking, cellular use, and health monitoring.
The battery may not be the only efficiency upgrade. The smartwatch is also rumored to use Qualcomm’s Snapdragon Wear Elite chip instead of Samsung’s Exynos W1000, which could help stretch runtime further.
5G support could complicate the battery gains
Another reported change is 5G support. Previous leaks have suggested that Samsung is preparing a 5G version of the Galaxy Watch Ultra 2, though availability may initially be limited to markets such as the US and South Korea.
That upgrade could make the watch more capable away from a phone, but it may also affect battery life. Until Samsung announces the device, it is unclear how much of the larger battery will be used to offset 5G power demands. Samsung is also likely to base the Watch Ultra 2’s software on Wear OS 7, which Google recently unveiled at I/O 2026.
The Galaxy Watch Ultra 2 is expected to debut alongside Samsung’s next foldables, which are rumored to arrive in July 2026. So, it looks like we may not have to wait long to find out whether Samsung’s next Ultra watch really delivers the battery jump suggested by the latest reports.