HumanoidCommercial productCurrent generation

UBTECH Robotics Walker S2

UBTECH’s bipedal industrial humanoid (176 cm, 70 kg), unveiled in July 2025, whose main new feature is that it swaps its own battery in about 3 minutes, according to the company. In November 2025 UBTECH announced the start of series production and delivery, and in December 2025 its 1,000th unit built; order and delivery figures are the company’s own.

Year: 2025
Origin: China
Autonomy: L2 · Guided autonomy
Dataset review: 2026-11 · Methodology & evidence levels

What it does, and on what evidence

Five mandatory fields on every sheet. A product page proves neither commercial availability nor full autonomy: here we separate what has been documented from what is announced.

1 · Task

Factory and warehouse tasks: according to UBTECH, sorting, loading, assembly, inspection, palletising and depalletising, and handling loads of up to 15 kg between floor level and 1.8 m, on automotive lines, in factories, in logistics and in data-collection centres.

2 · Autonomy by task

Does on its own

According to UBTECH, it decides on its own whether to swap or charge its battery depending on task priority and performs the swap without human intervention; in the July 2025 demonstration video it did so in about 3 minutes, with tools at the wrists instead of hands. The company credits its Co-Agent with intent understanding, task planning and anomaly detection and handling; it has published no success rates or data on unaided operation.

A person steps in

UBTECH delivers the robot as a “turnkey solution” with its BrainNet platform to set up each scenario and a user-training system; it does not publish how tasks are programmed or whether teleoperation is used. The swap stations monitor battery health and maintenance staff replace degraded packs, according to New Atlas.[UBTECH][CnEVPost, 2025][New Atlas, 2025][UBTECH, 2025]

3 · Strongest evidence

Pilot2026-01

In January 2026 UBTECH said Airbus had bought the Walker S2, without saying how many units, for aerospace manufacturing applications; Airbus described the cooperation as being at an “early concept-testing stage”. UBTECH says it supplies the robot for automotive, factories, logistics and data centres and names collaborations with BYD, Geely, FAW-Volkswagen and Foxconn, but we have found no customer documenting its use in production, nor any published results.[Reuters, 2026][UBTECH, 2025]

4 · Access

Commercial product

Sold to businesses with no public price. According to UBTECH, the Walker series has booked over 800 million yuan in orders since early 2025 (November 2025; over 1.4 billion for all its humanoids in 2025, per Reuters), including a 159 million contract for a data-collection centre in Zigong; series delivery began in November 2025 with a target of 500 units that year.

5 · Lifecycle

Current generation

Latest model in UBTECH’s Walker S industrial series, whose website also lists Walker S and Walker S1. Unit no. 1,000 left the Liuzhou plant on 2025-12-26. Annual capacity is a company goal: 5,000 units in 2026 and 10,000 in 2027 (November 2025); in January 2026 it spoke of exceeding 10,000 in 2026.

[UBTECH, 2025][Global Times, 2025][Reuters, 2026]

Spec sheet

Manufacturer maxima under declared conditions; not simultaneous. The test condition is shown under each value.

Weight: 70 kg; 70 kg per the graphic spec panel on UBTECH’s page; not stated whether batteries are included
Payload: 15 kg; 15 kg handled within a 0–1.8 m high workspace, per UBTECH; each hand grasps up to 7.5 kg (1 kg with the fingers). No test conditions published
Operating time: Not published; UBTECH publishes no runtime per battery; it says the robot swaps its own battery in about 3 minutes, using two batteries and swap stations
Top speed: 2 m/s; “Walking 2m/s” in UBTECH’s graphic spec panel, no conditions
Height: 1.76 m; 176 cm per UBTECH

Primary source quality: Manufacturer / operator

Backed by:[UBTECH][Global Times, 2025]

Taxonomy profile

Where the platform sits on the four axes of the reference framework.

Autonomy

Guided autonomy

Autonomous navigation on defined routes with basic obstacle avoidance.

Coordination

Coordinated

Standalone
Coordinated
Collaborative swarm

Shares state and telemetry through a base station or central server.

Control

primary: Supervised mission

FPV
Teleop
Supervised
BVLOS
RL/VLA

supported: Supervised mission · Learned policy (RL/VLA)

Perception

4 sensing modalities

Stereo cameras / VIO
RGB-D depth cameras
RGB cameras
Tactile / haptic sensors

Operating environments

Industrial plant
Warehouse / logistics

Sectors

Advanced manipulation
Logistics & last mile

Ideal business case

Handling and carrying boxes in factories and warehouses (per the manufacturer)

Add to comparator Calculate fleet ROI Understand the taxonomy

Similar platforms

Sources for this sheet

How we grade evidence →

1.
UBTECH Walker S2 Humanoid Robot | Autonomous Battery Swapping for Mass Production Delivery — UBTECH Robotics
B· Manufacturer / operatorManufacturerCommercial materialDeclaration
Checked against full text · accessed 2026-11-04
Autonomous battery swap “within 3 minutes”; chooses to swap or charge by task priority; 15 kg within a 0–1.8 m workspace; RGB stereo vision in the head; Co-Agent. Spec panels (images) on the same page: 176 cm, 70 kg, 52 DoF, “Walking 2m/s”, 11-DoF hand (7.5 kg), 2 RGB-D, 2 RGB and 2 fisheye cameras. The Chinese version (/cn/) says the same (“3分钟换电”). No runtime per battery or price.
2.
1,000th industrial humanoid robot rolls off production line at UBTECH in Liuzhou — Global Times (sección «Press Release»), 2025-12-30
B· Manufacturer / operatorManufacturerCommercial materialDeclaration
Checked against full text · accessed 2026-11-04
Statement published in the press-release section: unit no. 1,000 left the Liuzhou plant on December 26, six months after the first (June); 1.76 m; autonomous battery swapping; loads of up to 15 kg within 0–1.8 m.
3.
UBTech shows how its humanoid robot can work 24/7 with autonomous battery swap — CnEVPost, 2025-07-17
C· Third party, not peer-reviewedMediaEditorial processDeclaration
Checked against full text · accessed 2026-11-04
UBTECH announcement of 2025-07-17: autonomous battery swap in three minutes “without human intervention or shutdown”, as shown in a video; dual batteries; can choose to swap or charge. Nio, Zeekr and BYD had tested earlier UBTECH robots.
4.
Watch: Humanoid robot swaps out its own batteries for 24/7 operation — New Atlas, 2025-07-21
C· Third party, not peer-reviewedMediaEditorial processDemonstration
Checked against full text · accessed 2026-11-04
Describes the video: it uses tool attachments at the ends of its arms for the swap and its hands “appear to have been sacrificed” for the demonstration; the stations monitor battery health and maintenance staff replace degraded packs. UBTECH had not yet detailed the robot.
5.
UBTECH Humanoid Robot Walker S2 Begins Mass Production and Delivery, with Orders Exceeding 800 Million Yuan — UBTECH (comunicado vía PR Newswire, en Kyodo News PR Wire), 2025-11-17
B· Manufacturer / operatorManufacturerCommercial materialDeclaration
Checked against full text · accessed 2026-11-04
Start of production and delivery of a first batch of “several hundred” Walker S2, targeting 500 in 2025; target capacity of 5,000 (2026) and 10,000 (2027); Walker-series orders over 800 M yuan since early 2025 (159 M for Zigong); Co-Agent; collaborations with BYD, Geely, Foxconn, SF Express, etc. No customer provides usage data.
6.
UBTech agrees Airbus deal to expand robot use in aviation manufacturing — Reuters (en Gulf Times), 2026-01-21
C· Third party, not peer-reviewedMediaEditorial processDeclaration
Checked against full text · accessed 2026-11-04
According to UBTECH, Airbus has already bought the Walker S2 (no unit count); Airbus: the cooperation is “in the early concept-testing stage”. UBTECH humanoid orders in 2025: over 1.4 bn yuan; expected capacity of over 10,000 units in 2026 (per the company).