Chinese regulatory filings are giving the clearest look yet at Galaxy S27 Ultra charging speed and battery capacity, with the rumored Galaxy S27 Pro showing similar charging hardware.
Samsung hasn't announced the Galaxy S27 lineup, its model names, battery capacities, charging speeds, or launch date. But China's 3C database lists Samsung model numbers SM-S9570 and SM-S9580 with charging profiles reaching 60W. Those model numbers have been linked to the Galaxy S27 Pro and Galaxy S27 Ultra, respectively.
Separate battery certifications list rated capacities of 5,087mAh and 5,534mAh. Those figures would likely translate to typical capacities of roughly 5,200mAh for the Pro and 5,700mAh for the Ultra, although Samsung hasn't confirmed either advertised figure.
If the Ultra reaches 5,700mAh, it would mark the first battery-capacity increase for Samsung's Ultra line since the Galaxy S20 Ultra launched with a 5,000mAh battery in 2020.
What the certification listings show for Galaxy S27 Ultra 60W wired charging
China's 3C database lists SM-S9570 and SM-S9580 with support for charging at up to 20V/3A, or 60W, according to Android Authority and SammyGuru.
Those model numbers are widely expected to correspond to the Galaxy S27 Pro and Galaxy S27 Ultra, but Samsung hasn't confirmed that mapping.
The filings point to the same 60W maximum for both devices. For the Ultra, that would be unchanged from the Galaxy S26 Ultra, which introduced 60W wired charging to Samsung's smartphone lineup earlier this year.
Samsung officially rates the Galaxy S26 Ultra for 60W charging and says it can reach up to 75% in around 30 minutes under its test conditions.
The rumored S27 Ultra would therefore retain Samsung's current wired-charging ceiling rather than raising it again.
A 60W certification establishes the maximum supported charging profile on paper. It doesn't establish how long the phone can sustain that power, how quickly it charges from empty to full, or how aggressively charging slows as the battery fills.
Those questions will require testing on finished hardware.
Galaxy S27 Pro 60W charging: a new tier above the Plus
The more notable change is the rumored Galaxy S27 Pro.
The Pro is expected to join Samsung's 2027 flagship lineup as a new tier, and its certification points to the same 60W maximum as the Ultra.
That would put it above the standard Galaxy S27 and Galaxy S27 Plus in wired charging.
Earlier 3C listings pointed to:
Galaxy S27: Up to 25W
Galaxy S27 Plus: Up to 45W
Galaxy S27 Pro: Up to 60W
Galaxy S27 Ultra: Up to 60W
Those names remain inferred from Samsung's model-number pattern rather than officially confirmed product names.
The battery filings create a similar split at the top. The Pro-associated battery carries a 5,087mAh rated capacity, which Android Authority and SammyGuru expect Samsung could advertise at roughly 5,200mAh typical.
That would give the rumored Pro a larger battery than the current Galaxy S26 Plus, which Samsung rates at 4,900mAh typical, while also moving it to the Ultra's 60W charging tier.
The base S27 and S27 Plus have separately been rumored to retain battery capacities close to their S26 predecessors, but those figures are less firmly established than the Pro and Ultra battery certifications.
If the current model mapping holds, the Pro appears positioned as more than a naming change between the Plus and Ultra. Its leaked battery and charging specifications would put it closer to Samsung's top model in those areas.
Galaxy S27 Ultra 5700mAh battery: rated versus typical capacity
The reported 5,200mAh and 5,700mAh figures aren't the capacities printed directly in the regulatory filings.
The certifications list:
SM-S957-associated battery: 5,087mAh rated
SM-S958-associated battery: 5,534mAh rated
Android Authority independently corroborated those entries, while SammyGuru reported the same figures.
Rated and typical capacities aren't interchangeable.
The rated figure is the minimum capacity specified for the battery, while the typical figure reflects the average capacity manufacturers generally use in marketing and retail specifications.
Based on Samsung's usual rated-to-typical gap, a 5,087mAh rated battery would likely be marketed at around 5,200mAh typical, while a 5,534mAh rated battery would likely become 5,700mAh typical.
Samsung hasn't published those typical capacities yet.
If the Galaxy S27 Ultra does reach 5,700mAh, that's a 14% increase over the Galaxy S26 Ultra's 5,000mAh typical battery.
It would also end one of the longest unchanged specifications in Samsung's flagship line. The Galaxy S20 Ultra launched with a 5,000mAh typical battery in 2020, and every subsequent S-series Ultra through the Galaxy S26 Ultra has stayed at that figure.
The battery chemistry remains less certain.
SamMobile and other reports have suggested Samsung could use silicon-carbon battery technology to fit more capacity into the S27 Pro and Ultra without a proportionally larger battery pack.
Samsung has already introduced silicon-carbon batteries in its 2026 foldables, but the S27 certifications don't identify the battery chemistry. Treat silicon-carbon as a separate rumor until Samsung or another stronger technical source confirms it for these devices.
What the certification data doesn't confirm
The regulatory listings establish considerably less than a final retail specification sheet.
They don't confirm:
Samsung's commercial names for SM-S9570 and SM-S9580
Advertised typical battery capacities
Charging time from empty to full
How long either phone sustains 60W charging
Battery temperatures during charging
The exact USB-PD or PPS requirements for reaching maximum speed
Which charger Samsung will recommend or sell for the phones
Retail box contents in every market
Battery chemistry
Regional differences in charging hardware
The model-number mapping is also still an inference. SM-S9570 and SM-S9580 consistently fit the expected Pro and Ultra positions in Samsung's numbering sequence, but Samsung hasn't publicly attached those names to the devices.
The same caution applies to the 5,200mAh and 5,700mAh figures. The underlying rated capacities come from regulatory data, while the rounder typical capacities are projections based on how Samsung normally markets batteries.
That makes the 5,534mAh rated Ultra battery a stronger data point today than the phrase "5,700mAh Galaxy S27 Ultra."
What to do before you buy
The clearest evidence currently points to 60W wired charging for both SM-S9570 and SM-S9580, with rated battery capacities of 5,087mAh and 5,534mAh associated with the expected Pro and Ultra models.
For Galaxy S26 Ultra owners, the battery is the more significant potential upgrade.
The current Galaxy S26 Ultra already supports 60W charging, so the S27 Ultra certification doesn't indicate a faster charging ceiling. The expected jump from 5,000mAh to around 5,700mAh, however, would be a substantial capacity increase if Samsung ships the battery represented by the filing.
That still doesn't tell you how much longer the phone will last. Processor efficiency, display power use, modem behavior, software optimization, and thermal management all affect real-world endurance.
Anyone considering an upgrade specifically for battery life should wait for Samsung's official specification and independent battery testing.
For now, 60W charging and the rated battery capacities are the strongest evidence. The S27 Pro and Ultra names, 5,200mAh and 5,700mAh marketed capacities, silicon-carbon chemistry, and real-world charging performance all remain unconfirmed.
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