Release
Jan 1, 2024
Price
Price TBA
Connectivity
2
Status
Active
Height
64.5cm (standing), 33cm (prone)
Weight
60kg (battery included)
Battery
4–6 hours (unloaded walking >5h / 20km; 20kg load >4h / 15km)
Speed
6+ m/s (21.6 km/h)
B2
Unitree's industrial-grade quadruped robot built for demanding real-world applications including emergency rescue, industrial inspection, and power line patrol. The B2 is the fastest running industrial-grade quadruped robot at over 6 m/s, with 360 N·m joint torque, a standing load capacity of 120+ kg, and continuous walking load over 40 kg. Features IP67 ingress protection, an operating temperature range of -20°C to 55°C, and optional wheel-legged hybrid locomotion. Supports autonomous charging and plug-in battery swap for extended deployment.
Listed price
Price TBA
Enterprise pricing (contact sales)
Release window
Jan 1, 2024
Current status
Active
Unitree Robotics
Last verified
Mar 9, 2026
Technical overview
Core specifications and system stack
A fast read on the mechanical profile, sensing package, and platform integrations behind B2.
Technical Specifications
Height
64.5cm (standing), 33cm (prone)
Weight
60kg (battery included)
Battery Life
4–6 hours (unloaded walking >5h / 20km; 20kg load >4h / 15km)
Charging Time
Not disclosed (plug-in battery swap supported)
Max Speed
6+ m/s (21.6 km/h)
Tech Components
Sensors (3)
Connectivity (2)
Operational profile
How this robot is configured
Capabilities
13
Connectivity
2
Key capabilities
Ecosystem fit
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Benchmark set
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About the B2
The B2 is a Quadruped robot built by Unitree Robotics. Unitree's industrial-grade quadruped robot built for demanding real-world applications including emergency rescue, industrial inspection, and power line patrol. The B2 is the fastest running industrial-grade quadruped robot at over 6 m/s, with 360 N·m joint torque, a standing load capacity of 120+ kg, and continuous walking load over 40 kg. Features IP67 ingress protection, an operating temperature range of -20°C to 55°C, and optional wheel-legged hybrid locomotion. Supports autonomous charging and plug-in battery swap for extended deployment.
Pricing has not been publicly disclosed. See all Unitree Robotics robots on the Unitree Robotics page.
Spec Breakdown
Detailed specifications for the B2
Height
64.5cm (standing), 33cm (prone)At 64.5cm (standing), 33cm (prone), the B2 is sized for its intended operating environment and use cases.
Weight
60kg (battery included)Weighing 60kg (battery included), the B2 balances structural integrity with portability and maneuverability.
Battery Life
4–6 hours (unloaded walking >5h / 20km; 20kg load >4h / 15km)With a battery life of 4–6 hours (unloaded walking >5h / 20km; 20kg load >4h / 15km), the B2 can operate for sustained periods before requiring a recharge. Battery life is measured under typical operating conditions and may vary based on workload intensity and environmental factors.
Charging Time
Not disclosed (plug-in battery swap supported)A charging time of Not disclosed (plug-in battery swap supported) means the ratio of operation to downtime is an important consideration for applications requiring near-continuous availability. Some deployments use multiple robots in rotation to maintain uninterrupted service.
Maximum Speed
6+ m/s (21.6 km/h)A top speed of 6+ m/s (21.6 km/h) enables rapid traversal of terrain while maintaining stability on varied surfaces.
The B2 uses Intel Core i5/i7 + optional Jetson Orin NX (up to 3 compute units) as its intelligence backbone. This AI platform powers the robot's decision-making, perception processing, and autonomous behavior. The sophistication of the AI stack directly impacts how well the robot handles unexpected situations and adapts to new environments.
B2 Sensor Suite
The B2 integrates 3 sensor types, forming the perceptual foundation that enables autonomous operation.
This sensor configuration enables the B2 to navigate unstructured terrain, detect obstacles, build environment maps, and maintain stability on varied surfaces. Multiple sensor modalities provide redundancy and more robust perception than any single sensor type alone.
Explore sensor technologies: components glossary · full components directory
B2 Use Cases & Applications
Four-legged robots excel in environments where wheeled robots struggle — stairs, rough terrain, construction sites, and industrial facilities. Their biological-inspired locomotion provides stability and adaptability that makes them versatile platforms for a wide range of applications.
Capabilities That Enable Real-World Use
The B2 offers 13 distinct capabilities, each contributing to the robot's practical utility.
These capabilities work together with the robot's 3 onboard sensor types and Intel Core i5/i7 + optional Jetson Orin NX (up to 3 compute units) AI platform to deliver practical, real-world performance.
Ecosystem Integration
The B2 integrates with the following platforms and ecosystems, extending its utility beyond standalone operation.
This ecosystem compatibility enables the B2 to work as part of a broader automation setup rather than operating in isolation.
B2 Capabilities
13
Capabilities
3
Sensor Types
AI
Intel Core i5/i7 + optional …
Autonomous Navigation
Autonomous navigation allows the B2 to move through its environment without human guidance, planning efficient paths around obstacles and adapting to changes in real time. For a quadruped robot, this involves simultaneous localization and mapping (SLAM) to build and maintain environmental models, path planning algorithms to find efficient routes, and reactive obstacle avoidance for unexpected situations. The complexity of autonomous navigation scales dramatically with the environment — navigating a structured warehouse is substantially different from navigating a cluttered home or outdoor space. The B2's navigation system must handle the specific challenges of its intended deployment scenarios reliably and repeatedly.
Additional Capabilities
Connectivity & Integration
How the B2 communicates with your network, smart home devices, cloud services, and companion apps.
Network & Communication Protocols
B2 Technology Stack Overview
The B2 by Unitree Robotics integrates 6 distinct technology components across sensing, connectivity, intelligence, and interaction layers. The physical platform features a height of 64.5cm (standing), 33cm (prone), a weight of 60kg (battery included), a top speed of 6+ m/s (21.6 km/h), providing the foundation on which this technology stack operates.
Perception — 3 Sensor Types
The perception layer is built on 3D LiDAR, Depth Camera ×2, Optical Camera ×2. These work in concert to give the robot a detailed understanding of its operating environment. This multi-sensor approach provides redundancy and enables the robot to function reliably even when individual sensors encounter challenging conditions such as low light, reflective surfaces, or cluttered spaces.
Connectivity — 2 Protocols
For communications, the B2 relies on 1000M Ethernet ×4, USB 3.0 ×4. This connectivity stack ensures the robot can communicate with cloud services, local smart home devices, mobile apps, and other networked systems in its environment.
Intelligence — Intel Core i5/i7 + optional Jetson Orin NX (up to 3 compute units)
Intel Core i5/i7 + optional Jetson Orin NX (up to 3 compute units) serves as the computational brain, processing sensor data, making navigation decisions, and orchestrating the robot's autonomous behaviors. The quality of this AI platform directly influences how well the robot handles novel situations, adapts to changes in its environment, and improves its performance over time through learning.
Who Should Consider the B2?
Target Audience
Quadruped robots are primarily purchased by industrial and enterprise customers for inspection, patrol, and data collection in environments too dangerous or tedious for humans. Some companion-oriented quadrupeds target tech-savvy consumers.
Key Considerations
Terrain adaptability, payload capacity for sensor payloads, runtime per charge, IP rating for outdoor/industrial use, and autonomous navigation in unstructured environments are key factors. For industrial use, consider integration with existing asset management and inspection workflows.
Pricing
Availability
ActiveThe B2 has a status of Active. Check with Unitree Robotics for the latest availability details.
B2: Strengths & Trade-offs
Engineering compromises and where this quadruped robot excels
What the B2 does well
Broad capability set
With 13 distinct capabilities, the B2 is designed as a versatile platform rather than a single-task device. This breadth means the robot can handle varied scenarios and workflows, reducing the need for multiple specialized robots and increasing its utility across different situations.
Extended battery life
A battery life of 4–6 hours (unloaded walking >5h / 20km; 20kg load >4h / 15km) provides substantial operational runway. For quadruped applications, this means longer work sessions between charges, fewer interruptions, and the ability to complete larger tasks or cover more area in a single charge cycle.
Strong mobility performance
A top speed of 6+ m/s (21.6 km/h) provides the B2 with the agility to cover ground efficiently. This is particularly valuable for applications that require rapid response, large-area coverage, or keeping pace with human movement in shared environments.
What to consider carefully
Significant weight
At 60kg (battery included), the B2 is a substantial piece of equipment. This weight contributes to stability and robustness but also means the robot requires careful consideration of floor load limits, transportation logistics, and the potential impact force in the event of unexpected contact with people or objects.
Undisclosed pricing
Unitree Robotics has not published a public price for the B2. While common for enterprise-class robotics, the absence of transparent pricing can complicate budgeting and comparison shopping. Prospective buyers will need to engage directly with the manufacturer for quotes, which may vary by configuration and volume.
Note: This strengths and trade-offs assessment is based on the B2's documented specifications as tracked in the ui44 database. Real-world performance depends on deployment conditions, firmware maturity, and environmental factors. For the most current information, check the Unitree Robotics manufacturer page or visit the official product page. Use the comparison tool to evaluate these trade-offs against competing robots in the same category.
How Quadruped Robot Technology Works
Understanding the engineering behind this category
Four-legged robots represent a biomimetic approach to mobility — taking inspiration from nature's most versatile terrestrial locomotion strategy. Unlike wheeled or tracked robots, quadrupeds can navigate stairs, step over obstacles, traverse rough terrain, and recover from stumbles. The engineering behind these machines combines advanced control theory, real-time computation, and rugged mechanical design into platforms that go where other robots simply cannot.
Navigation & Mobility
Quadruped navigation combines classical SLAM with proprioceptive terrain sensing. The robot builds environment maps using LiDAR and cameras while simultaneously using force sensors in its feet and joint torque measurements to understand ground conditions beneath each footstep. This dual approach — seeing ahead while feeling underfoot — enables navigation through environments that would confuse purely vision-based systems, like muddy terrain or surfaces covered in snow. Path planning for legged robots is more complex than for wheeled platforms because the planner must consider foothold locations, body clearance, and dynamic stability at every step.
The Role of AI
AI in quadruped robots increasingly relies on learned locomotion policies trained in simulation and transferred to real hardware. Rather than hand-coding gait controllers for every terrain type, modern systems use reinforcement learning to develop robust walking behaviors that generalize across surfaces. This sim-to-real approach has dramatically improved quadruped agility and robustness. Higher-level AI handles mission planning, autonomous inspection routines, anomaly detection, and integration with enterprise software systems for industrial applications.
Sensor Fusion & Perception
Quadruped robots carry sophisticated sensor payloads combining environmental perception with proprioceptive awareness. Outward-facing sensors (LiDAR, cameras, depth sensors) map the environment and identify obstacles. Inward-facing sensors (joint encoders, IMUs, force/torque sensors) monitor the robot's own state — its balance, footing, and body orientation. The fusion of external and internal sensing is uniquely important for legged robots because stable locomotion requires constant feedback about both where the robot is going and how its body is responding to each step. Payload-mounted inspection sensors (thermal cameras, gas detectors, acoustic sensors) add application-specific perception on top of the mobility platform.
Power & Battery Management
Legged locomotion is energy-intensive, and battery life is a critical constraint for quadruped robots. Most commercial quadrupeds offer one to two hours of active operation per charge. Power consumption varies significantly with gait speed, terrain difficulty, and payload weight. Battery-swap systems are common in industrial deployments, allowing continuous operation through multiple battery packs. Some facilities install automatic charging stations where the robot can dock and recharge between patrol routes. Efficient gait selection — using the least energy-consuming walking pattern appropriate for current terrain — is an active optimization area.
Safety by Design
Quadruped robots operating in industrial and public environments must handle safety across multiple dimensions. Physical safety features include compliant leg designs that absorb unexpected impacts, emergency stop buttons, and speed-limiting zones around detected humans. Autonomous safety behaviors include automatic sit-down when battery reaches critical levels, return-to-base when communication is lost, and avoidance of detected hazards. For outdoor operation, IP ratings (typically IP54 or higher) ensure resistance to dust and water. Operational geofencing ensures the robot stays within approved areas.
What's Next for Quadruped Robots
Quadruped robotics is moving toward greater autonomy, longer endurance, and expanded manipulation capability. The addition of robotic arms to quadruped platforms is creating mobile manipulation systems that can not only inspect but also interact with the environment — turning valves, pressing buttons, or collecting samples. Improved batteries and more efficient actuators are extending operational windows. Fleet coordination of multiple quadrupeds for large-area coverage is becoming practical. As costs decrease, quadruped robots are expanding from premium industrial inspection tools into more accessible commercial and even consumer applications.
The B2 by Unitree Robotics incorporates many of these technology pillars. For a detailed look at the specific sensors and components used in the B2, see the sensor analysis and connectivity sections above, or browse the complete components glossary for explanations of every technology used across the robotics industry.
B2 in the Quadruped Market
How this robot compares in the quadruped landscape
Unitree Robotics has not publicly disclosed pricing for the B2, which is typical for enterprise-focused robotics platforms that offer customized solutions and direct-sales relationships.
The B2's 3 sensor types provide solid perceptual coverage for its intended use cases. This mid-range sensor suite balances cost with capability, covering the essential modalities needed for quadruped applications.
Being currently available for purchase gives the B2 a practical advantage over competitors still in development or prototype stages. Buyers can evaluate the actual product rather than relying on spec-sheet promises that may change before release.
Head-to-Head Comparisons
Side-by-side specs, capability overlap analysis, and key differentiators.
For the full picture of Unitree Robotics's portfolio and market strategy, visit the Unitree Robotics manufacturer page.
Owning the B2: Setup, Maintenance & Tips
Practical guide from day one through years of ownership
Initial Setup
Quadruped robot setup typically involves professional installation or detailed guided procedures. Initial steps include unpacking and physical inspection, charging the battery fully before first use, installing any payload accessories (sensors, cameras, manipulators), connecting to the control network, running joint calibration and self-test routines, and mapping the initial operating environment. Industrial deployments may require integration with facility networks, security systems, and asset management platforms. Plan for a multi-day setup process for enterprise installations, including operator training and safety protocol establishment.
Ongoing Maintenance
Quadruped robots require more frequent maintenance than wheeled platforms due to the mechanical complexity of their legs. Weekly checks should include joint inspection for unusual sounds or play, foot pad condition assessment, sensor cleaning, and battery health verification. Monthly maintenance includes more thorough mechanical inspection, firmware updates, and locomotion performance benchmarking. Legs and joints are the primary wear points — monitor for vibration changes that might indicate bearing wear or actuator degradation. Keep a detailed maintenance log, as patterns in the data can predict component failures before they cause operational disruption.
Software Updates & Long-Term Support
Quadruped robot software updates can significantly improve locomotion performance, autonomous navigation capability, and mission execution efficiency. Gait improvements based on real-world deployment data can make the robot faster, more stable, and more energy-efficient. Security patches are particularly important for robots operating in sensitive industrial or commercial environments. Coordinate updates with your deployment schedule to avoid disruption, and test updates in a controlled area before returning the robot to active duty.
Maximizing Longevity
Maximizing the service life of a quadruped robot requires attention to both mechanical and environmental factors. Operate within specified payload limits to avoid accelerated joint wear. Use appropriate gaits for the terrain — running on flat floors when a walk would suffice wastes energy and increases mechanical stress. Keep the robot's IP-rated seals in good condition for outdoor operation. Battery care is critical: follow the manufacturer's charging guidelines, avoid deep discharges, and replace batteries when capacity drops below 80% of original. A service contract with the manufacturer ensures access to replacement parts and expert maintenance that can keep the robot operational for many years.
For Unitree Robotics-specific support resources and documentation, visit the Unitree Robotics page on ui44 or check the manufacturer's official website at Unitree Robotics's product page.
Frequently Asked Questions
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Data Integrity
All B2 data on ui44 is verified against official Unitree Robotics sources, including spec sheets, product pages, and press releases. Last verified: 2026-03-09. Official source: Unitree Robotics product page. If you find outdated or incorrect information, please let us know — accuracy is our top priority.
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