Galaxy S27 Ultra 3C Certification Leak: The Massive 5,700mAh Battery is Finally Real
For several generations, Samsung's most premium flagship users have been waiting for a meaningful battery upgrade. Since the Galaxy S23 Ultra, Samsung has stubbornly stuck with a 5,000mAh battery capacity [cite: 1.1.5]. But if you're planning to upgrade your phone in early 2027, the wait is officially over. Recent Chinese 3C certification and TÜV filings have confirmed that the Galaxy S27 Ultra 5700mAh battery is not just a rumor—it is certified reality.
When smartphone specifications appear in regulatory databases like China's 3C and South Korea's testing agencies, we move past the realm of speculation. These filings are mandatory for safety and quality compliance before mass production can begin [cite: 1.1.5]. The Samsung S27 Ultra 3C certification leak reveals the exact capacities and charging speeds that will power Samsung's next ultimate flagship.
Here is a detailed look at the new battery specs, the 60W charging upgrade, and what this means for your daily screen time.
The 5,700mAh Battery: Breaking the 5,000mAh Barrier
The biggest takeaway from the recent S27 Ultra battery specs leak is the sheer size of the new cell. According to the certification documents, the Galaxy S27 Ultra features a battery with a rated capacity of 5,534mAh [cite: 1.2.4]. In consumer marketing terms, this translates to a massive "typical capacity" of 5,700mAh [cite: 1.2.4].
This is a staggering 700mAh increase over the current Galaxy S26 Ultra. When paired with the highly anticipated Snapdragon 8 Elite Extreme Gen 6 processor, this battery boost means the S27 Ultra will easily survive the heaviest days of 144Hz gaming and continuous 5G browsing [cite: 1.2.1]. For power users, the days of hunting for a charger by 6 PM are finally behind us.
60W Fast Charging Confirmed
A larger battery requires faster charging technology, and Samsung is finally stepping up. The certification reports confirm that the Galaxy S27 Ultra will support up to 60W wired fast charging. While Samsung has conservatively relied on 25W and 45W for years, this 60W upgrade ensures that filling the massive 5,700mAh cell won't keep you tethered to a wall outlet for hours.
The Surprise: Galaxy S27 Pro Battery Specs
The certification filings also shed light on a completely new entrant to the Galaxy S lineup: the Galaxy S27 Pro. Positioned between the Plus and the Ultra, the S27 Pro is also getting a substantial battery. The filings indicate a rated capacity of 5,087mAh, translating to a typical capacity of 5,240mAh, and matching the Ultra with 60W fast charging support.
Leaked Battery Specifications Summary
To give you a clear view of how the new premium lineup stacks up based on the latest regulatory filings, here is a detailed breakdown:
| Specification | Galaxy S27 Ultra | Galaxy S27 Pro |
|---|---|---|
| Rated Capacity (Certification) | 5,534 mAh | 5,087 mAh |
| Typical Capacity (Marketed) | 5,700 mAh | 5,240 mAh |
| Wired Fast Charging | 60W | 60W |
| Processor | Snapdragon 8 Elite Extreme Gen 6 | To Be Confirmed |
Swipe sideways to see all table columns →
- Galaxy S27 Ultra
- 5,534 mAh
- Galaxy S27 Pro
- 5,087 mAh
- Galaxy S27 Ultra
- 5,700 mAh
- Galaxy S27 Pro
- 5,240 mAh
- Galaxy S27 Ultra
- 60W
- Galaxy S27 Pro
- 60W
- Galaxy S27 Ultra
- Snapdragon 8 Elite Extreme Gen 6
- Galaxy S27 Pro
- To Be Confirmed
Why This Leak Changes Everything
Relying on anonymous tips is one thing, but hardware components clearing international safety boards is a near-guarantee of what is coming to market. The Samsung S27 Ultra 3C certification leak definitively proves that Samsung is prioritizing raw battery endurance for its 2027 ultra-flagship.
As we approach the anticipated January or February 2027 launch window, this 5,700mAh battery combined with 60W charging firmly positions the Galaxy S27 Ultra as the device to beat. Stay tuned as we continue to track official pre-order details and pricing ahead of Samsung's next massive Unpacked event.
