Autonomous Battery Swapping

A robot that walks itself to a swap station and replaces its own battery when it's low, with no human help.

Autonomous battery swapping means a robot, when running low on power, goes to a battery-swap station on its own, removes its depleted battery, installs a fully charged one, and gets back to work — all without a person's involvement. Compared with plugging in to charge, it skips the hours-long wait, letting a robot run close to around the clock, which makes it a problem factories can't avoid once they put humanoid robots on the production line. Implementing it requires a battery mechanism that can be quickly plugged and unplugged (often paired with a dual-battery setup or backup power so the robot never loses power mid-swap), plus precise localization and hand-eye coordination. UBTech's Walker S2, released in 2025, claims it can autonomously swap its own battery in about 3 minutes using both arms.

ExampleOn a production line, when a UBTech Walker S2 runs low on power, it walks to a battery cabinet, pulls the battery pack off its back with both arms, and inserts a fully charged one, all without stopping operations.

Also called

Automatic Battery Swap

Related

Autonomous Docking and Recharging · Hot-Swappable Battery · Battery Runtime · Battery Management System (BMS) · UBTech Walker S2

Sources

UBTECH Walker S2 产品页 (Chinese)
CnEVPost: UBTech shows how its humanoid robot can work 24/7 with autonomous battery swap

As of

2025-07