Certification records from China's 3C regulator, cited by industry publications, indicate that Samsung will significantly increase battery capacity in the new Galaxy S27 Ultra and Galaxy S27 Pro flagships. According to regulator databases, the Ultra version may get a battery of around 5700 mAh — roughly 14% more than the current Galaxy S26 Ultra's 5000 mAh battery. The Pro model shows a figure of about 5200 mAh versus 5000 mAh in its predecessor. If the numbers are confirmed, this will be the most significant battery upgrade in the Galaxy S series since the Galaxy S20.

Silicon-carbon technology as the basis for the increase

The key technological factor behind the capacity increase, experts say, is Samsung's gradual adoption of silicon-carbon battery technology. This solution has already proven its effectiveness in the complex foldable devices of the Galaxy Fold 8 series. The new materials allow a notable boost in energy density without a critical increase in body thickness or weight, which is especially important for thin flagships. Earlier leaks also indicated that 60W wired charging support would be retained for both new devices.

New flagship Snapdragon chip

Beyond the batteries, the Galaxy S27 is being prepared with a new flagship Snapdragon chip, which has already appeared in Qualcomm's internal documents. To date, three parallel project variants under the chipset codename SM8975 have been registered: the SS_SM8975_GS27_AP build for the Asia-Pacific region, the SS_SM8975_GS27_KOR version for South Korea's home market, and the SS_SM8975_GS27_VZW modification for US carrier Verizon's requirements. All three project records are tied to the "Snapdragon_Premium_High_2026" software distribution package. A full presentation of the Galaxy S27 flagship series is expected soon.

Contradictory data

It is important to note the discrepancy in exact capacity figures between sources. In primary leaks and roundup materials, the Galaxy S27 Ultra appears with a battery of "around 5700 mAh," whereas the ixbt.com article headline lists the certified Ultra capacity as 5534 mAh. Both versions agree on the main point — a substantial increase over the S26 Ultra's 5000 mAh — but the exact value may differ depending on the specific regional revision or rounding method. Moreover, all information is based on regulator databases and leaks, not on an official Samsung press release, so final specifications may be adjusted by the manufacturer before the presentation.

What this means for the user

For the end user, the combination of increased capacity, silicon-carbon chemistry, and retained 60-watt wired charging means noticeably longer battery life without a charger — according to insider estimates, the device can last a full day of intensive use. Nevertheless, until Samsung officially confirms, all figures cited should be considered highly probable but not final.