Galaxy S25 Edge only uses Samsung’s in-house batteries

The recently launched Galaxy S25 Edge is certainly slim and light for its screen size. However, it trades those things with the telephoto camera and the battery capacity. Unlike other Galaxy S25 series phones, Samsung is using batteries made by just one company.

The Galaxy S25 Edge is powered by a 3,900mAh battery. According to a report from TheElec, that battery is made by Samsung SDI, the South Korean firm's battery-making firm. Usually, Samsung SDI provides batteries for Samsung's high-end phones.

In comparison, Samsung MX (Samsung's mobile division) used batteries from two different suppliers—(Amperex Technology Limited) ATL and Samsung SDI—for the Galaxy S25, Galaxy S25+, and Galaxy S25 Ultra. In the past, Samsung has purchased batteries from other firms, including China's BYD and South Korea's LG Energy.

Chinese brands started using Silicon Carbon batteries in their high-end phones. It offers 10-15% higher capacity in the same battery volume. However, Samsung did not use a Silicon Carbon battery in the Galaxy S25 Edge. Instead, the South Korean firm is reportedly developing a battery technology called SUS CAN, which offers higher capacity and solves battery swelling issues commonly found in Samsung phones.

SUS CAN batteries could be used in the Galaxy S26 series, which will be launched early next year. They could also be used in Samsung's foldable phones that will be launched in the second half of 2026.