The first images of the battery said to be used by Samsung for the Galaxy S27 Series have appeared, users have received good news about the significantly increased capacity!

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After 7 years of maintaining the 5,000 mAh battery on the Galaxy S Ultra line, Samsung may be preparing a significant upgrade for the next generation of flagships. According to certification filings in China and Korea, the Galaxy S27 Ultra is expected to use a 5,700 mAh battery, while the Galaxy S27 Pro is said to have a 5,200 mAh battery.

If the information is correct, this will be the largest capacity battery ever appeared on a Galaxy S Ultra model, an increase of about 14% compared to the Galaxy S26 Ultra.

According to data from the Safety Korea certification facility, the Galaxy S27 Ultra battery carries code EB-BS958DBY, has a capacity of 5,700 mAh and certification number YU10899-26034. Meanwhile, the 5,200 mAh battery of the Galaxy S27 Pro carries the code EB-BS957CBY, with certification number YU10899-26036. Both are manufactured by Zhuhai CosMX Power Jinwan Subsidiary, a Chinese company.

Previously, the 5,700 mAh battery of the Galaxy S27 Ultra also appeared in 3C certification documents in China. This is a mandatory safety certification system for most products sold in this market, playing a similar role to UL certification in the US.

The fact that Samsung has maintained a 5,000 mAh battery for many years is said to partly stem from caution after the Galaxy Note 7 fire incident. Meanwhile, some Chinese competitors have used larger capacity batteries, such as the Honor X80 Pro Max with an 11,000 mAh battery.

Samsung also used to combine silicon-carbon material in the batteries of the Galaxy Z Fold 8, Galaxy Z Fold 8 Ultra and Galaxy Z Flip 8. However, the proportion of this material is said to be low, causing the batteries to still be classified as lithium-ion.

In addition to battery capacity, the Galaxy S27 Pro is rumored to have a 6.47-inch screen, a 200 MP main camera and use the Snapdragon 8 Elite Gen 6 or Exynos 2700 chip. This is said to be a new flagship model, expected to launch early next year with the Galaxy S27 series.

According to other certification information, both the Galaxy S27 Ultra and Galaxy S27 Pro can support 60W wired charging, equivalent to the charging capacity of the Galaxy S26 Ultra.

Although the certification documents have revealed some notable parameters, Samsung has not confirmed the official configuration of the two devices. Actual battery capacity, battery technology used and operating time still need to be verified when the product launches.