Samsung Galaxy Watch Ultra 2 · Reported Feature

Charging stays at 10W

What we’re expecting

Unchanged from the Ultra 1 and the 2025 refresh. The battery gains come from the chip's 3nm efficiency, not faster charging.

Samsung's Galaxy Watch Ultra 2 is coming with the same 10W charging speed as the original, no upgrade, no change. For a watch with 'Ultra' in the name, that's a pretty flat answer to anyone hoping the sequel would at least charge faster.

iDevice Confidence

Widely reported

Widely reported by reliable sources, short of an official word.

How does Galaxy Watch Ultra 2's battery life compare?

Standalone runtime per charge, longer is better.

Galaxy Watch Ultra 2
~72hrs est. (~800mAh leaked)
Samsung Galaxy Watch 9
~50hrs est (40mm) / +30% vs Watch 8
Galaxy Watch Ultra (current)
Up to 48 hours (590mAh)
Apple Watch Ultra 3
Up to 42 hours
Samsung Galaxy Watch 8
Up to 40 hours (40mm)
Apple Watch Series 12
Improved (est. 24–36 hrs)
Pixel Watch 4
~30hrs (41mm) / ~40hrs (45mm)
Apple Watch Series 11
Up to 24 hours

Tethered and USB-C-powered devices excluded (no standalone rating).

Sources reporting this (1)

Galaxy Watch 9 and Ultra 2 likely won't charge any faster than their predecessorsAndroid Police · Jun 5, 2026