Galaxy Watch Ultra 2 to Pack Much Bigger Battery, Report

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Samsung might be about to give its toughest wearable a very welcome upgrade: a significantly larger battery. Short answer? More hours on the wrist. Longer answer? That could change how people choose smartwatches.

Recent 3C certification filings confirmed what insiders already suspected for charging: both the Galaxy Watch9 and the Galaxy Watch Ultra 2 will stick with 10W charging, the same top-up speed as the outgoing models. No boost to charging tech, then. Instead, the focus appears to be on raw capacity.

SamMobile’s latest scoop points to a rated capacity of 784 mAh for the Galaxy Watch Ultra 2. In marketing terms Samsung may list that as an 800 mAh typical battery. Compare that to the Galaxy Watch Ultra’s 590 mAh cell and the math is obvious — this isn’t a tweak. It’s a leap.

Smaller Watch9 sizes get attention too. The 40mm Galaxy Watch9 is said to carry a rated 382 mAh battery, likely described as 400 mAh typical, up from the Watch8’s 325 mAh in the same size. Meanwhile, the 44mm Watch9 reportedly remains at around 435 mAh, matching the Watch8’s larger model.

For readers who like the numbers tidy, here are the rumored figures:

Galaxy Watch Ultra 2: 784 mAh (typical ~800 mAh)
Galaxy Watch9 40mm: 382 mAh (typical ~400 mAh)
Galaxy Watch9 44mm: ~435 mAh (unchanged)

Samsung is also expected to introduce a Galaxy Watch9 Classic, and all three watches are rumored to debut alongside a new crop of foldables — the Galaxy Z Flip8, Galaxy Z Fold8 and Galaxy Z Fold8 Ultra — on July 22. If true, Samsung’s strategy seems clear: iterative charging speeds, but meaningful battery upgrades where users will notice the difference.

That raises a practical question: would you rather have faster charging or substantially longer runtime? For many, the answer is obvious. For Samsung, the trade-off may be the most important product decision of the year.