Samsung SDI Unveils Solid-State Battery Designed to Power Humanoid Robots

At InterBattery 2026 in Seoul, Samsung SDI introduces a breakthrough battery aimed at making humanoid robots lighter, safer, and capable of working longer hours.

The future of humanoid robots may soon receive a powerful energy boost. Samsung SDI has unveiled a new pouch-style all-solid-state battery designed specifically for robotics, marking the company’s first public presentation of battery technology built for physical AI systems.

The battery will be showcased at InterBattery 2026 in Seoul, one of the world’s leading events for advanced battery technologies. The announcement signals Samsung SDI’s growing focus on robotics as a key area for innovation.

Unlike traditional lithium-ion batteries that use liquid electrolytes, solid-state batteries rely on solid materials, making them safer and capable of storing more energy. Samsung SDI says its new battery aims for an energy density of around 500 Wh/kg, nearly double that of many conventional lithium-ion batteries.

For humanoid robots, this could be a major step forward. Higher energy density means robots could operate longer hours while carrying lighter batteries, improving mobility and efficiency in factories and other workplaces.

The company explained that the pouch-type design helps reduce weight while maintaining stable power output, which is critical for robots that move, lift, and perform complex tasks.

Industry experts believe such advancements could accelerate the adoption of humanoid robots across manufacturing and automation sectors. Companies like BMW and Tesla have already begun testing humanoid robots in their production lines.