Samsung’s new battery tech will fix swelling issues, improve capacity, and charging speed on Galaxy phones

There’s nothing quite as annoying as reaching for your old phone and finding the back cover bulging like a mandazi that’s been left too long in the sun. Battery swelling has been a long-standing issue for not just Samsung, but many mobile devices from other brands as well, and after years of minimal progress in battery innovation, Samsung is finally stepping up with something meaningful.

According to a report by TheElec (via SamMobile), Samsung SDI, the company’s wing that manufactures batteries, is gearing up to introduce a new battery technology called SUS CAN—short for Steel Use Stainless, or simply a stainless steel material. And no, it’s not some fancy canned drink, but rather a promising advancement that could breathe new life into the future of Samsung Galaxy smartphones.

This new tech promises a triple win: higher energy density (read: more battery capacity), faster charging speeds, and—perhaps most importantly—a fix for battery swelling, which has haunted many Galaxy owners over the years. It’s the kind of improvement users have been craving, and it looks like Samsung is finally ready to deliver.

Samsung definitely has some catching up to do in the fast charging department. While its flagship phones like the Galaxy S25 Ultra boast up to 45W fast charging, that’s still playing in the kiddie pool compared to the wild speeds we’re seeing from Chinese brands. Think 80W on the OnePlus 13T, 100W on the HONOR 400 Pro, and an outrageous 120W on the Xiaomi Redmi Note 14 Pro+ 5G. According to the GSMArena database, over 120 smartphones already support 120W fast charging—yet Samsung, the biggest Android brand on the planet, isn’t on that list. With SUS CAN, though, maybe we’ll finally see Samsung stop jogging behind and start sprinting toward real fast-charging parity.

Interestingly, Apple has already embraced SUS CAN tech, using it in the iPhone 16 Pro Max. But for Samsung, the benefits could go even further. With the tech’s ability to pack more power into a compact design, it could become a key component for slimmer devices in the future—especially relevant after the Galaxy S25 Edge was criticized for its underwhelming battery life. If Samsung plans to continue pushing ultra-thin designs, SUS CAN might just be the secret weapon it needs.

While Samsung hasn’t confirmed exactly when this tech will roll out, whispers suggest it might debut with the Galaxy S26 series, expected in early 2026. Rumors even point to a 5,500mAh battery for the S26 Ultra, which would be a significant boost over the S25 Ultra’s 5,000mAh unit—especially with SUS CAN’s efficiency in play.

Samsung may have taken its sweet time, but if this tech lives up to the hype, it could finally mark a turning point in the brand’s battery story. Swollen batteries, slow charging, and short-lived power? We just might be waving goodbye to all of that in one swing.