Samsung Galaxy S27 Pro and Ultra promise larger batteries and faster charging
What the latest leaks tell us
Recent filings with China’s 3C certification body have given enthusiasts a clearer picture of the upcoming Samsung Galaxy S27 Pro and Samsung Galaxy S27 Ultra. The documents confirm that Samsung is finally addressing one of the most common complaints about the Samsung Galaxy S26 series – modest battery size – by fitting the new flagships with noticeably larger cells.
Battery capacity and charging speed
The Samsung Galaxy S27 Pro is expected to ship with a 5200mAh battery. That is already a step up from the 5000mAh pack found in the Samsung Galaxy S26 Ultra, even though the Pro model will be physically smaller. The Samsung Galaxy S27 Ultra, the larger sibling, appears to be equipped with a 5700mAh battery. This represents roughly a fourteen percent increase over the S26 Ultra’s capacity, promising longer screen‑on time for power users.
Both devices will continue to support 60W wired charging, mirroring the fast‑charging capability of the Samsung Galaxy S26 Ultra. While competitors such as Xiaomi are pushing the envelope with the Redmi Note 17 Pro Max’s massive 9210mAh battery, the S27 series still marks a meaningful improvement for Samsung’s premium line.
Memory, storage and performance expectations
Leaks from South Korean blog Naver suggest that the Samsung Galaxy S27 lineup will standardise on 12GB of LPDDR6 RAM for most variants. The top‑end Samsung Galaxy S27 Ultra with a 1TB storage option will receive 16GB of RAM, giving it a clear advantage for heavy multitasking and gaming. All models will use UFS 5.1 storage, which should translate to faster app launches and smoother file transfers compared with the previous generation.
These memory upgrades come at a time when global DRAM prices remain volatile. As a result, analysts expect the Samsung Galaxy S27 series to carry a higher price tag than the Samsung Galaxy S26 series. Buyers should be prepared for a premium cost, especially for the Ultra configuration with 1TB storage and 16GB RAM.
How the S27 fits into the broader market
The battery enhancements position Samsung to stay competitive in a market where endurance is a key selling point. While the Samsung Galaxy S27 Pro’s 5200mAh cell may not match the extreme capacities of some Android mid‑range devices, it offers a balanced mix of size, weight and performance for a flagship. The Samsung Galaxy S27 Ultra’s 5700mAh battery should comfortably last a full day of intensive use, even with the high‑refresh display and powerful Snapdragon chipset expected to power the device.
Overall, the leaked specifications suggest that Samsung is listening to consumer feedback and taking incremental steps to improve real‑world usability. If the official launch confirms these numbers, the Samsung Galaxy S27 Pro and Ultra could become the go‑to choices for users who want flagship performance without sacrificing battery life.
