UNIT · WALK
UBTECH / China

Walker S2

Industrial humanoid that swaps its own battery in under 3 minutes for true 24/7 operation.

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Walker S2 humanoid robot full-body product photo
176 cm Height
52 DOF
15 kg Payload
2.0 m/s Top speed
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Overview

Walker S2 is UBTECH's industrial humanoid built for round-the-clock factory and logistics work. It is the first humanoid with an autonomous hot-swappable battery system, navigating to a pod and changing its own pack in under three minutes to keep running. It entered mass production in November 2025.

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Capabilities

  • World-first autonomous hot-swappable dual-battery system: changes its own pack in under 3 minutes for continuous 24/7 uptime
  • 52 degrees of freedom, including Gen-4 dexterous hands with 11 DOF each and sub-millimeter precision
  • 15 kg payload with a high-power waist servo (±162° rotation) for ground-to-shelf reach across a 0–1.8 m workspace
  • Pure RGB binocular stereo vision using deep-learning depth estimation for human-eye 3D perception
  • Co-Agent industrial AI plus BrainNet 2.0 for multi-robot swarm coordination
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Specifications

Height
176 cm
Degrees of freedom
52
Hands
11 per hand
Payload
15 kg
Top speed
2.0 m/s
Battery
Dual hot-swappable lithium-ion packs; autonomous swap in under 3 minutes
Runtime
~2 h walking / ~4 h standing per battery; continuous via autonomous swap
Actuation
Electric servo motors; high-power waist servo for 15 kg lifting
Sensors
Pure RGB binocular stereo vision; force/torque sensing
Compute
Co-Agent industrial AI agent; BrainNet 2.0 for swarm intelligence
Origin
China
Unveiled
2025
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Deployment

  • 24/7 factory and production lines
  • Logistics sorting and material handling
  • Parcel and goods delivery
  • Multi-robot fleet operation