UBTech Walker S2

UBTech's 2025 industrial humanoid, able to swap its own battery without stopping work.

Walker S2 is the full-size industrial humanoid robot UBTech released in July 2025, the newest generation of its Walker S series. Its standout feature is autonomous battery swapping: the robot uses both arms to remove its own depleted battery from its back and install a fully charged one, a process taking about 3 minutes with no shutdown or human help needed, enabling continuous 24/7 operation, since battery life has long been a bottleneck for putting humanoids into factories. Published specs put it at about 1.76 meters tall, with a waist that can rotate roughly ±162° and pitch, and a 15 kg payload. It reportedly won multiple orders worth over RMB 100 million in 2025, used mainly for handling and sorting tasks on automotive production lines.

ExampleOn a car final-assembly line, the robot carries parts totes, and when its battery runs low, it walks itself to a swap station and changes its own battery with both hands before returning to its post.

Also called

Walker S2, Walker S Series, Walker S1

Related

UBTech Robotics · Humanoid Robot · Autonomous Battery Swapping · Hot-Swappable Battery · In-Factory Training / Pilot Deployment · UBTech Walker X

Sources

UBTECH Walker S2 官网产品页 (Chinese)
全球首创！优必选工业人形机器人Walker S2实现自主换电（国家科技创新中心） (Chinese)

As of

2025-12