UBTech's Walker S2 humanoid robot can swap its own batteries without human help, enabling 24/7 operation in factories and reshaping the future of automation in manufacturing.

The robot is designed to have a human-like walking gait, and – if its predecessors are anything to go by – will stand around 170 cm (5.6 ft) tall.

What I want is a device to clean up late after a dinner party so I can go to bed.

The latest humanoid robot on the market can purportedly run across a grassy lawn, do cartwheels and even fist-fight – and it costs less than $6,000. In a promotional video from China’s Unitree ...