Humanoid robots have crossed a new Rubicon in the latest demo of the Walker S2 robot from Ubtech Robotics. In it, the robot approaches a charging tower filled with multiple batteries (and one empty slot). It removes a battery from its back and replaces it with a fresh one from the charging stack before returning to what is some sort of work site.

The Walker S2 appears to have dual battery packs, so at least one is always plugged into the robot to supply power during changes.

Ubtech Robotics' new Walker S2 robot features a new hot-swappable battery system. Ubtech Robotics

Ubtech says this hot-swappable battery system will enable the company's robots to work 24/7 without interruption (not including routine battery swaps).

To see this demo in action, check out the video in this article.