Samsung Galaxy Watch Ultra 2 Features 800mAh Battery

The battery grows 35% to 800mAh

Ultra 2's battery is one of its biggest hardware upgrades.

1 min read

Samsung Galaxy Watch Ultra 2 Guide

Galaxy Watch

Samsung Galaxy Watch Ultra 2

3 generations

Samsung Galaxy Watch Ultra 2Released Aug 2026Available now
Galaxy Watch UltraReleased Jul 2025Previous
Samsung Galaxy Watch Ultra (2024)Released Jul 2024Previous

What this is made of

The bigger battery is reported to run for up to 60 hours
The leaked images put runtime at up to 60 hours from the 800mAh cell. Runtime is the number that decides a purchase, and the 35% bigger battery is what buys it.
Right

How we know this

What changed, newest first.

OutcomeRightIt turned out as reported.

Aug 10, 2026Android HeadlinesThe 35% bigger cell buys no extra runtime, measured over two weeks.+1 outlet

Jul 25, 2026Gadgets & WearablesAdds 590mAh to 800mAh, and a slimmer case with it

Jul 24, 2026SammyGuruA 35% bigger cell, and still no 5G

Jul 23, 2026SammyGuru800mAh in the watch now EN13319-certified for diving

Jul 22, 2026Samsung Newsroom+1 outlet

Confirmed

Show 15 more reportsShow fewer

Jul 22, 2026Samsung Newsroom800mAh and 35% more capacity than the previous generation

Confirmed

Jul 22, 2026Android HeadlinesA bigger cell that still fills to 100% in 90 minutes

Jul 22, 2026SamMobileSamsung's biggest smartwatch battery yet

Jul 22, 2026Android HeadlinesAdds a 35% bigger cell, on sale August 7

Jul 22, 2026Android HeadlinesSamsung's own 35% figure, with capacity put at 800mAh

Jul 22, 2026Gadgets & WearablesA 12% thinner case and a 5,000-nit display alongside it

Jul 22, 2026SamMobileAdds 800mAh in a 10.7mm case

Jul 22, 2026SamMobileAdds Samsung calls it the longest-lasting Galaxy Watch ever+1 outlet

Jul 22, 2026GizmodoThe 590mAh original it replaces shipped back in 2024

Jul 22, 2026Digital TrendsThe bigger cell arrives alongside the new Snapdragon Wear Elite

Jul 21, 2026ForbesThe 800mAh cell is 1.35x the 2024 Ultra's 590mAh

Jul 20, 2026SammyGuruAdds 800mAh against the first Ultra's 590mAh, a 35 percent jump

Jul 20, 2026SamMobile800mAh comes off Samsung's own leaked marketing images

Jul 11, 2026Digital Trends590mAh to 800mAh, the biggest jump anywhere in the lineup+1 outlet

Jun 9, 2026SamMobileLists 784mAh rated capacity, likely marketed as 800mAh+7 outlets

Reported

Frequently asked

Is the Ultra 2 battery bigger?

Yes. Samsung confirmed an 800mAh battery, 35% more than the first Ultra's 590mAh.

Does that mean longer battery life?

It gives room for it, but real battery life also depends on the chip and software.

Latest Samsung Galaxy Watch Ultra 2 news

Samsung is fixing a Galaxy Watch Ultra 2 VO2 Max bug on track runsAndroid Authority · Oct 28, 2026
Some Galaxy Watch owners are waking up to burn-like marks under the sensors9to5Google · Oct 22, 2026
The Galaxy Watch Ultra 2 can finally go scuba divingSep 17, 2026
The Galaxy Watch Ultra 2 got thinner, not differentAug 18, 2026

All Samsung Galaxy Watch Ultra 2 news