China’s robotics industry chalked up another world first on Thursday, as a company based in Shenzhen announced it had developed a new humanoid robot that can change its own batteries.A demonstration video released on Thursday shows the Walker S2 robot, developed by UBTech Robotics, walking over to a charging station, removing a depleted battery from its chest, inserting it into a charging dock, and then installing a fresh battery before wandering off.The feature means the robot can – in...