The Galaxy S27 Ultra could feature a 5,700mAh battery, according to Android Authority, citing Chinese regulatory documents. The rumored S27 Pro is expected to carry a 5,200mAh cell. These figures reflect the typical capacity Samsung would likely advertise publicly.
3C certification listings reportedly show a rated cell capacity of 5,534mAh for the Ultra and 5,087mAh for the Pro. The estimated 5,700mAh figure marks a potential 15% increase over the Galaxy S26 Ultra’s 5,000mAh battery. SamMobile suggests this would be the first capacity increase for the Ultra tier since its 2020 launch.
60W Charging Holds Steady
Both the Galaxy S27 Ultra and the alleged S27 Pro are expected to support 60W wired charging. This comes from 3C database listings identified by model numbers SM-S958 and SM-S957, which indicate a maximum input of 20V/3A. SammyGuru and Archyde have separately reported the same figures.
This isn’t an upgrade though. Samsung introduced 60W wired charging with the Galaxy S26 Ultra earlier this year, so the S27 lineup would simply maintain that ceiling rather than push past it.
The Pro Tier Gets Interesting
The more notable shift, if these reports hold, is where the S27 Pro lands in the lineup. SammyGuru describes it as a new addition that gets the same 60W charging and higher battery capacity as the Ultra, setting it apart from the rest of the range.
Earlier 3C filings reportedly showed the standard Galaxy S27 capped at 25W with a 4,300mAh battery, and the S27 Plus at 45W with 4,900mAh, according to Android Authority. The Pro designation appears to mark a genuinely new tier for top-end charging and battery capacity, sitting just below the Ultra rather than blending in with the standard models.
What’s Still Unconfirmed
Regulatory filings confirm maximum wattage, but they don’t detail actual charging times or how a phone manages heat under load. Those numbers only come from independent testing of retail units, and no cited outlet has run that testing yet.
- Claims about silicon-carbon anode battery chemistry remain speculative, sourced mainly from SamMobile
- Archyde’s claim that neither model will ship with a charger lacks corroboration from Android Authority or SammyGuru
- Battery capacity figures are converted estimates, not confirmed final specs
The 60W charging figure is the most consistent detail across multiple reports, making it the most reliable piece of this leak. Battery capacity and chemistry claims carry more uncertainty. Anyone considering an upgrade from the Galaxy S26 Ultra based on these leaks alone may want to wait for Samsung’s official announcement and independent reviews before deciding.
Follow Hashlytics on Bluesky, Facebook, LinkedIn , Telegram and X to Get Instant Updates
