As we continue on our path towards a future filled with tireless humanoid robots staffing factory floors, companies are looking to solve a major pain point of the tech: a limited battery life. Chinese company UBTECH recently showed off its bipedal Walker S2 robot contorting its arms to hot swap one of its battery packs — a "world's first" — which means the 95-pound automaton could technically work 24 hours a day. Video footage shows the robot walking up to a rack of swappable batteries. After unnaturally flipping its arms around, the robot replaces one of its two battery […]