Samsung Set To Transform Smartwatch Battery Life In 2026

Rumors about Samsung’s development of a groundbreaking battery technology began circulating in late September and early October 2024. Recent reports from a Samsung subsidiary reveal that these innovative batteries are not only in the pipeline but also set to enter mass production by 2026.

The new batteries, which utilize an oxide-based design, boast a density of 200 watt-hours per liter, bringing them closer in performance to traditional lithium-ion batteries, as detailed in a report by the Korea Herald. Samsung aims for these solid-state oxide batteries to take the place of lithium batteries due to their enhanced safety, efficiency, and flexibility compared to current technologies.

The specific subsidiary involved in this development is Samsung Electro-Mechanics, a company that provides components and products to a diverse range of clients. At CES 2025 in Las Vegas, CEO Chang Duk-hyun noted that the company has conducted thorough internal testing and is actively engaging in discussions with potential clients. While the identities of these clients remain undisclosed, there are suggestions that major wearable technology companies, possibly including Apple, could also benefit from this advanced battery technology.

If these reports prove accurate, the 2026 Samsung Galaxy Watch could significantly enhance battery life. Currently, some smartwatches boast impressive performance, such as the Garmin Instinct 3, which is said to last for 24 days, though this often relies on solar charging features. A true multiweek battery life lasting through medium to heavy usage would be a game changer for smartwatch enthusiasts.

It’s unclear whether this new battery technology will be extended to smartphones as well. While improving battery performance in wearables is critical, a sufficiently large capacity that can support a smartphone throughout an entire day, even under heavy usage conditions, would also represent a major advancement. Regardless, first movers in incorporating this technology into their wearables stand to gain a significant advantage.