Galaxy S27 Ultra battery upgrade points to 5,700mAh cell and 60W charging

Galaxy S27 Ultra battery upgrade reports now tie Samsung’s top flagship to a 5,534mAh rated cell that could translate to a 5,700mAh typical battery. That would finally push the Ultra beyond the 5,000mAh ceiling Samsung has used for years, with 60W charging still in play for the premium Android race.

Samsung’s Galaxy S27 series is starting to take shape through certification filings, and the battery details are the clearest signal yet. For buyers watching for a real upgrade in endurance, the Galaxy S27 Ultra is the standout model here, since the reported numbers point to Samsung finally moving past the 5,000mAh limit that has defined its top-tier phones for years.

The focus keyword here is the Galaxy S27 Ultra battery upgrade, and the early reports suggest this could be more than a small refresh. Alongside the Ultra, filings for the Galaxy S27 Pro and other models hint at a broader reshuffle in battery sizing and charging speeds across Samsung’s 2027 flagship line.

Samsung SDI battery listing also points to a 5,200mAh Galaxy S27 Pro cell

The Galaxy S27 Pro battery certification shows an EB-BS957CBY pack rated at 5,087mAh, likely marketed around 5,200mAh. That puts the Pro in a better position for battery life than a standard mid-tier flagship, while still keeping it clearly below the Ultra in Samsung’s lineup.

What matters here is the direction, not just the number. A 5,200mAh-class battery would give the S27 Pro a stronger endurance profile on paper, especially if Samsung pairs it with efficiency improvements elsewhere in the device. At the same time, the gap between the Pro and Ultra remains visible, which suggests Samsung is still using battery size as one of the main separators in the family.

That kind of tiering is fairly typical in Samsung’s flagship range. The Ultra gets the headline feature upgrades, while the smaller premium models get meaningful but more measured changes. In this case, the battery listing gives the Pro a clear bump without blurring the line between the models.

Galaxy S27 Ultra 3C certification, plus 27W charging for the S27 Plus, suggest an early 2027 launch

China’s filings now cover the full Galaxy S27 family, with the S27 and S27 Plus listed at 45W and 27W charging, respectively. The Galaxy S27 Ultra is also tied to 60W charging in the broader reports, which would keep it in the premium tier for charging speed as well as battery size.

The certification trail matters because it usually shows a product moving from rumor stage into the final stretch before launch. Here, that makes the early 2027 window look more believable, especially since the filings appear to cover multiple models in the same lineup rather than a single device.

For Samsung, the combination of battery and charging changes would be easy for shoppers to understand. The Ultra appears set for the biggest battery jump, the Pro gets a solid step up, and the Plus remains a more restrained option with slower charging. That structure suggests Samsung is refining the lineup rather than reinventing it.

If these reports hold, the Galaxy S27 series could arrive with one of Samsung’s clearest battery updates in years. The Ultra, in particular, would finally break out of the company’s familiar 5,000mAh pattern, and that alone would make it one of the more closely watched flagship launches of 2027.