Highlights
- The Samsung Galaxy S27 Ultra and Galaxy S27 Pro battery units have received Safety Korea certification.
- The Galaxy S27 Ultra is tipped to pack a 5,700mAh battery.
- The Galaxy S27 Pro could feature a 5,200mAh battery.
Samsung Galaxy S27 Ultra and S27 Pro batteries have been spotted on the Safety Korea certification listing with images. Although the Samsung Galaxy S27 series is expected to hit the market next year, the Safety Korea certification listings cover model numbers EB-BS958DBY and EB-BS957CBY under certification numbers YU10899-26034 and YU10899-26036.
Samsung Galaxy S27 series leaks reveal massive 5,700mAh (Galaxy S27 Ultra) and 5,200mAh (Galaxy S27 Pro) battery capacities along with 60W charging support.
Samsung Galaxy S27 Series Batteries Appear on Safety Korea
Samsung Galaxy S27 Series, comprising the Samsung Galaxy S27 Ultra and the Galaxy S27 Pro, received Safety Korea certification with the model numbers EB-BS958DBY and EB-BS957CBY, respectively.
Zhuhai CosMX Power Jinwan Subsidiary in China produces both battery packs listed in the database. While the official certification images confirm the physical samples, the battery labels obscure the exact rated capacities, and regulatory filings provide the technical specifications.
Galaxy S27 Ultra Battery Capacity
According to the leaked details, the Samsung Galaxy S27 Ultra is equipped with a battery rated at 5,534mAh. However, Samsung is expected to offer a 5,700mAh battery capacity, indicating the company’s shift towards expanding standard battery sizes on its premium Ultra models.
Galaxy S27 Pro Battery Capacity
Alongside the Galaxy S27 Ultra, the Galaxy S27 Pro battery specifications have also leaked, revealing a rated battery capacity of 5,087mAh, which is likely to be advertised at 5,200mAh capacity.
Galaxy S27 Pro and S27 Ultra Charging Support
Samsung is expected to boost wired charging speeds across its Galaxy S27 series. Both the Galaxy S27 Ultra and Galaxy S27 Pro are tipped to support 60W wired fast charging. This upgrade will allow users to charge their larger battery packs quickly minimising downtime compared to previous generations.
Galaxy S27 Ultra vs Galaxy S26 Ultra: Expected Battery Upgrade
The leaked details show that the Galaxy S27 Ultra could offer a larger battery (5,700mAh) than the 5,000mAh capacity found in the Galaxy S26 Ultra.
| Specifications | Samsung Galaxy S26 Ultra | Samsung Galaxy S27 Ultra (Expected) |
| Marketed Battery Capacity | 5,000mAh | 5,700mAh |
| Rated Battery Capacity | ~4,855mAh | 5,534mAh |
| Charging Speed | 45W | 60W |
Samsung Galaxy S27 Series Launch Timeline: What We Know
The leak suggests the Galaxy S27 series is anticipated to formally launch in January 2027. The latest series is expected to feature four models: the standard Galaxy S27, Galaxy S27+, Galaxy S27 Pro, and Galaxy S27 Ultra. But more details are yet to be unveiled.
