Samsung has introduced a prototype solid-state battery smaller than a pea, unlocking huge potential for revolutionizing wearable devices. Despite its extremely compact size, this tiny battery achieves an energy density of 200 watt-hours per liter, comparable to that of larger traditional lithium-ion batteries.
The standout feature of this battery is its flexible design capability. Samsung states they can produce batteries in nearly any size and shape, from a few millimeters to several centimeters, thanks to their expertise in multilayer ceramic capacitor manufacturing techniques. This is unsurprising, considering the project took over three years and involved more than 40 granted patents to bring it to commercial viability.
The multilayer production process uses sophisticated printing and stacking methods, avoiding the wrinkling and swelling issues common with traditional lithium-ion batteries. The result is an ultra-dense, ultra-compact energy solution capable of withstanding numerous charge cycles.
Combined with the inherent advantages of solid-state technology, such as enhanced safety and shock resistance, Samsung’s breakthrough could prove highly significant. Solid-state batteries also have lower carbon emissions, are more environmentally friendly, and can operate across a broader temperature range.
Samsung aims to begin mass production in the first half of 2026, with plans to introduce this technology in their wearable devices, such as the Galaxy Ring, Galaxy Watch, and Galaxy Buds. According to a report from Business Korea, the company has provided samples to potential customers and partners. While solid-state batteries for electric vehicles and larger electronics are still years away from official commercialization, the wearable device segment could serve as an ideal testing ground.
In addition to wearables, Samsung also plans to commercialize solid-state batteries for electric vehicles – an industry currently dominated by lithium-ion and lithium iron phosphate batteries. The company unveiled this technology in August, boasting an impressive energy density of around 500 Wh/kg, a quick charging time of just nine minutes, and a lifespan of up to 20 years. Currently in the experimental production and testing phase with several car manufacturers, these batteries may hit the market by 2027.