China’s 3C certification database has revealed battery and charging specs for the Galaxy S27 Pro and S27 Ultra before any official Samsung announcement. The notable finding: the smaller S27 Pro reportedly carries a larger battery than last year’s flagship Ultra.
Battery Numbers Worth Knowing
Per 3C filings cross-referenced by SammyGuru and reported by Nokiamob, both devices show meaningful capacity gains over the S26 Ultra.
- Galaxy S27 Ultra (SM-S9580): rated 5,534 mAh, expected typical capacity of 5,700 mAh, up 700 mAh from the S26 Ultra’s 5,000 mAh
- Galaxy S27 Pro (SM-S9570): rated 5,087 mAh, expected typical capacity of 5,200 mAh, which also clears the S26 Ultra’s full battery outright
- Both models are certified as 5G mobile phones under those respective model numbers in the 3C database
- Samsung has not officially confirmed any of these figures
For anyone who runs their phone hard through a full day of navigation, video, and camera work, these capacity bumps are the kind of upgrade that could change daily behavior. Samsung has faced consistent criticism for trailing Chinese OEMs on battery size, and the S27 generation reportedly signals a deliberate course correction. These are capacity numbers, however, not tested endurance results.
These numbers are apparently pulled from leaked certification filings, so it’s smart to treat all of it as preliminary until Samsung actually steps up and confirms something.
Gadgets Now tech desk
Charging Speed Stays Put
Both devices are certified at 60W wired charging, matching the S26 Ultra with no improvement in wired power.
Both the S27 Pro and S27 Ultra are certified at up to 20V/3A per the 3C listings, confirming a 60W wired charging ceiling that matches the S26 Ultra exactly. No charger ships in the box, continuing Samsung’s established policy.
Chinese rivals routinely certify 100W or higher; Samsung narrows the battery capacity gap with the S27 series, but the charging speed deficit remains. The capacity story is genuinely encouraging, yet the wired power ceiling will keep charging speed purists watching the competition.
Samsung has not announced a launch date or official specifications, so 3C filings represent the clearest picture currently available. If battery endurance drives your upgrade decision, these leaks point in the right direction. If raw charging speed is your benchmark, the competition still has Samsung’s number.
