Samsung’s upcoming Galaxy S27 Pro and Galaxy S27 Ultra have just been certified for sale in China by 3C. This has revealed that they both support 60W wired charging, just like this year’s Galaxy S26 Ultra. But while there’s no change there, there is an exciting one in the battery capacity department. The 3C has also seemingly certified the duo’s batteries, and the S27 Ultra’s is rated at 5,534 mAh. That will most likely result in a typical advertised capacity of 5,700 mAh – 700 mAh more than what its predecessor can offer. The S27 Pro, on the other hand, is said to come with a 4,900 mAh battery, up from 4,700 mAh on the S26 Pro. These incremental but meaningful upgrades suggest Samsung is finally listening to user feedback about battery life.
What the 3C Certification Tells Us
The 3C certification is a mandatory step for any smartphone sold in China, and it often reveals key specifications before a device’s official launch. For the Galaxy S27 Pro and S27 Ultra, the certification lists 60W wired charging, which is the same speed as the Galaxy S26 Ultra. This means users shouldn’t expect a leap in charging speed this generation. However, the battery capacities are a different story. The S27 Ultra’s rated capacity of 5,534 mAh is a significant jump from the S26 Ultra’s 5,000 mAh. Samsung typically advertises batteries at a slightly higher typical capacity, so 5,700 mAh is a safe bet. The S27 Pro’s 4,900 mAh battery is a modest increase from the S26 Pro’s 4,700 mAh, but still welcome.
Why Battery Capacity Matters More Than Charging Speed
While 60W charging is fast, it’s not the fastest on the market. Many Chinese brands offer 100W or even 120W charging. But Samsung has always been conservative with charging speeds, prioritizing battery longevity and safety. The real win here is the increased capacity. A larger battery means longer screen-on time, more hours of gaming, and less anxiety about running out of juice before the day ends. For power users, the S27 Ultra’s 5,700 mAh battery could easily deliver over a day of heavy use. The S27 Pro’s 4,900 mAh battery is also a solid improvement, especially for a device that’s likely to have a smaller form factor.
Expected Battery Life Improvements
With a 5,700 mAh battery, the Galaxy S27 Ultra could see a noticeable improvement in battery life over its predecessor. The S26 Ultra, with its 5,000 mAh battery, already offered excellent endurance, often lasting well over a day with moderate use. Adding 700 mAh could push that to a day and a half for many users. The S27 Pro, with its 4,900 mAh battery, should also see a bump in longevity, though the difference will be less dramatic. Of course, actual battery life depends on the chipset, display, and software optimization. Samsung is expected to use the Snapdragon 8 Gen 4 or Exynos 2500, both of which should be more power-efficient than their predecessors. Combined with a larger battery, the S27 series could set new benchmarks for battery life in the flagship segment.
How It Compares to the Competition
In the premium Android space, battery capacities have been creeping up. The iPhone 16 Pro Max, for example, has a 4,676 mAh battery, while the Pixel 9 Pro XL has a 5,060 mAh battery. The Galaxy S27 Ultra’s 5,700 mAh battery would put it ahead of both. However, Chinese flagships like the Xiaomi 15 Ultra and Vivo X200 Pro often pack 5,500 mAh or more, and they also offer faster charging. Samsung’s advantage lies in its optimized software and efficient chips, which often allow it to match or exceed the battery life of phones with larger batteries. Still, the increased capacity is a step in the right direction.
Charging Speed: Is 60W Enough?
60W wired charging can fill a 5,700 mAh battery in about an hour, which is respectable but not groundbreaking. Many users have been calling for Samsung to adopt faster charging, especially since some competitors offer 120W charging that can fill a battery in under 30 minutes. However, Samsung has stuck with 45W and 60W for several generations, citing safety and battery health concerns. It’s possible that the company is waiting for new battery technology, such as stacked cells or silicon-carbon anodes, to become more mainstream before increasing charging speeds. For now, 60W is what we get, and it’s still faster than what Apple and Google offer on their flagship phones.
Wireless Charging and Other Features
The 3C certification only covers wired charging, so we don’t have details on wireless charging speeds. However, it’s safe to assume that both the Galaxy S27 Pro and S27 Ultra will support wireless charging, likely at 15W or higher. Samsung has also been improving its wireless charging speeds with each generation, so we might see 20W or even 25W wireless charging on the S27 series. Other features to expect include reverse wireless charging, which lets you charge accessories like earbuds or a watch on the back of the phone.
Design and Display Rumors
While battery and charging are the focus of this leak, there are also rumors about the design and display of the Galaxy S27 series. The S27 Ultra is expected to feature a slightly larger display, possibly 6.9 inches, with a higher peak brightness and a new anti-reflective coating. The S27 Pro might stick with a 6.7-inch display but could get a thinner bezel and a more efficient LTPO panel. Both phones are likely to retain the flat-edge design language introduced with the S26 series, but with refined materials and colors. Samsung is also rumored to be working on a new camera sensor for the Ultra, possibly a 200MP main sensor with improved low-light performance.
What About the Galaxy S27?
Interestingly, the 3C certification only mentions the Galaxy S27 Pro and S27 Ultra. There’s no word yet on a standard Galaxy S27. It’s possible that Samsung will skip the standard model this year, or that it will be certified later. Some reports suggest that Samsung might introduce a Galaxy S27 FE instead, but that’s pure speculation. For now, we can only confirm the Pro and Ultra models. If Samsung does release a standard S27, it will likely have a smaller battery, perhaps around 4,500 mAh, and the same 60W charging.
Launch Date and Availability
Samsung typically launches its Galaxy S series in early February. The Galaxy S26 series was announced in February 2026, so we can expect the Galaxy S27 series to arrive around the same time in 2027. The 3C certification is a strong indicator that the phones are in the final stages of development and will be ready for mass production soon. Pricing is always a big question, but given the increased battery capacity and other upgrades, we might see a slight price increase. The Galaxy S26 Ultra started at $1,199, so the S27 Ultra could start at $1,249 or more. The S27 Pro might start at $999 or $1,049.
Should You Wait for the Galaxy S27?
If you’re in the market for a new flagship phone, the Galaxy S27 series looks promising, especially if battery life is a priority. The S27 Ultra’s 5,700 mAh battery is a significant upgrade, and the S27 Pro’s 4,900 mAh battery is also a solid improvement. However, if you already own a Galaxy S26 Ultra or S26 Pro, the upgrade might not be essential unless you really need the extra battery life. The charging speed remains the same, and other improvements might be incremental. As always, it’s best to wait for the official announcement to see the full picture.
Final Thoughts
The 3C certification has given us a clear look at the battery and charging specs of the Galaxy S27 Pro and S27 Ultra. The S27 Ultra’s 5,700 mAh battery is the headline, offering a substantial increase over the S26 Ultra. The S27 Pro’s 4,900 mAh battery is a smaller but still welcome bump. Both phones support 60W wired charging, which is unchanged from the previous generation. While some may be disappointed by the lack of faster charging, the increased capacity is a more practical improvement for most users. With the launch still months away, we can expect more leaks and rumors to surface. Stay tuned for more updates on the Galaxy S27 series.
