Key Takeaways
- Samsung Galaxy S27 Ultra and Pro batteries identified as EB-BS958DBY and EB-BS957CBY respectively.
- Expected battery capacities: 5,700mAh for S27 Ultra and 5,200mAh for S27 Pro.
- Both models certified for 60W wired charging, matching the Galaxy S26 Ultra.
Samsung is set to upgrade the battery capacities of its upcoming Galaxy S27 Ultra and Galaxy S27 Pro models, according to recent certification listings.
The Galaxy S27 Ultra’s battery is identified as EB-BS958DBY, manufactured by Zhuhai CosMX Power, while the Galaxy S27 Pro’s battery is EB-BS957CBY, also from the same manufacturer.
Battery specifications for the Galaxy S27 Ultra include a rated capacity of 5,534mAh, which is expected to provide a typical capacity of 5,700mAh.
The Galaxy S27 Pro is expected to have a 5,087mAh rated capacity, offering a typical capacity of 5,200mAh.
Both devices are certified for 60W wired charging, aligning with the charging capabilities of the Galaxy S26 Ultra.
If the leaked capacities are accurate, the Galaxy S27 Ultra will offer a 700mAh or 14% increase over the Galaxy S26 Ultra’s 5,000mAh battery.
Even the Galaxy S27 Pro could feature a battery 200mAh larger than the Galaxy S26 Ultra, representing a 4% increase.
Samsung has maintained a 5,000mAh battery capacity across its Ultra flagships for several generations, making the expected upgrade significant.
Previous reports suggested that Samsung tested a Galaxy S27 Ultra prototype with a 7,000mAh battery but ultimately chose a smaller capacity to retain the S Pen.
Samsung has not officially announced a launch date for the Galaxy S27 series. However, a recent report suggests that the company could return to its traditional January or February launch schedule.
The Galaxy S27 Ultra and S27 Pro are expected to arrive in early 2027, although their final specifications and availability remain unconfirmed.
