When one battery starts to run low, the robot turns its torso, uses built-in tools on its arms and removes the drained battery.

Meet Walker S2 — a robot that swaps its own battery. No humans needed. Built by China’s UBTECH, it’s the first humanoid robot that can do this. When the battery runs low, it walks to a dock ...

There's no question that a robot changing its own battery resolves the down-time issues that will arise as android workers become more prevalent.

The Walker S2 humanoid robot, which can change its own battery when it's running low on power, could potentially be left to run on its own forever.