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Unitree - A2 Robot Dog (Standard, Pro, W)
From £22,430.26 £18,691.88
To £36,933.90 £30,778.25
Unitree A2 is a 37 kg industrial quadruped robot with high-speed agile locomotion, autonomous navigation, 20 km operational range, and 25 kg payload capacity.
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SKU
UNI-A2
Unitree A2
Stellar Explorer
Agile & Swift Lightweight Extended Endurance
Weighs around 37kg, fully loaded can continuously walk 3h / 12.5km
Unloaded can continuously walk 5h / 20km.
Lighter, Faster, Tougher
Industrial-Grade Legged Robot Heavy Payload Standard
Premium mobile hardware platform, open for rapid development
Dual-Sided Perception
Zero Blind Spots Greater Accuracy
2 industrial LiDARs (front & rear) , HD camera + front light to detect the environment ahead
Wheel-Leg Option Available
Unleash Greater Performance
Dual Battery System
Hot-Swappable Dual Batteries - Unlimited Runtime
Seamless Battery Swap - Uninterrupted Mission
Dual-battery parallel design: swap without stopping, the eternal heart for extreme missions
Reliable triple power system guarantees from -20ºC to 50ºC
High Power，Smart Control， Multi-Scenario Ready
From logistics, industrial inspection, to emergency rescue — effortlessly navigating extreme and complex environments with confidence
Medium Size | Powerful Performance | Industry Choice
| Model | A2 | A2 Pro | A2-W Standard | A2-W Pro |
| Battery Life (No load) | > 5 h / ≈ 20 km | ≈ 4–5 h / ≈ 50 km | ||
| Battery Life (No load) | > 3 h / ≈ 12.5 km | ≈ 2.5–3 h / ≈ 30 km | ||
| Weight (without battery) | About 31kg | About 35kg | ||
| Weight (with battery) | About 37kg | About 42kg | ||
| Speed | 0–3.7 m/s (Up to ~5 m/s) | 0–5 m/s | ||
| Ingress Protection Rating | IP56 | IP56–IP67 (Core components rated IP67) | IP56 | IP56–IP67 (Core components rated IP67) |
| Wheel-leg | / | Yes (wheel-leg model) | ||
| Sensor | LiDAR × 1 + Wide-angle Camera × 1 | LiDAR × 2 + Wide-angle Camera × 1 | LiDAR × 1 + Wide-angle Camera × 1 | LiDAR × 2 + Wide-angle Camera × 1 |
| Control & Compute | Standard: 8-Core high-performance CPU (platform) + Intel Core i7 (user development) | Standard: 8-Core high-performance CPU (platform) + Intel Core i7 (user development) + Jetson Orin NX 100 TOPS | Standard: 8-Core high-performance CPU (platform) + Intel Core i7 (user development) | Standard: 8-Core high-performance CPU (platform) + Intel Core i7 (user development) + Jetson Orin NX 100 TOPS |
| Size (Standing) | 820mm x 440mm x 570mm | |||
| Size (Lying Prone) | 720mm x 550mm x 220mm | |||
| Material | Aluminum Alloy + High-Strength Engineering Plastic | |||
| Degrees of Freedom (Joint Motors) | 12 | |||
| Joint Bearings | Industrial-grade crossed roller bearings (high precision, high load capacity) | |||
| Joint Motors | Low-inertia, high-speed inner rotor PMSM (enhanced response & heat dissipation) | |||
| Max Joint Torque | About 180 N.m | |||
| Range of Motion |
body：-58~58°
thigh：-134°~180°/-89°~225° shank：-158°~-30° |
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| Supply Voltage | 50.4V | |||
| Joint Encoder | Dual encoders | |||
| Cooling System | Local air Cooling | |||
| Power Supply | Dual slots, dual batteries (hot-swappable) | |||
| Battery Capacity |
Single Battery 9000mAh（453.6Wh）
Dual Batteries 18000mAh（907.2Wh |
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| Wi-Fi 6, Bluetooth 5.2 | YES | |||
| External Interfaces | RS485 x 2 CAN x 2 Gigabit Ethernet x 2 USB3.0-TypeC(8-Core CPU) x 2 USB3.0-TypeC (Intel Core i7)x2 Power Output：12V / 24V / BAT |
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| Speaker | YES | |||
| Microphone | Microphone array | |||
| Front Light | YES | |||
| Wireless vector follow module | / (Optional) | Expand (Optional) | / (Optional) | Expand (Optional) |
| GPS | / (Optional) | Expand (Optional) | / (Optional) | Expand (Optional) |
| 4G | / (Optional) | Expand (Optional) | / (Optional) | Expand (Optional) |
| Operating Temperature | -20℃～55℃ | |||
| Max Standing Load | About 100kg | |||
| Continuous Walking Load | About 25kg | |||
| Slope Walking Capability | About 45° | |||
| Stair Climbing Capability | Max Step Height: 30cm | |||
| Max Climb Height | About 0.5～1m | |||
| Replace Wheel-leg | Optional | |||
| Smart OTA Upgrade | Continuous Upgrades | |||
| Secondary Development | Supported | |||
Unitree A2 vs Unitree B2
Summary
A2 is focused on the secondary development and PoC project test use.
A2 lowers barriers to development and expands mobile robot applications. While offering over 85% of the B2's performance, the A2 is lighter and higher quality.
Positioning & Target Use
| A2 | B2 |
| Next-generation high-value industry standard designed for secondary development, proof-of-concept (PoC) testing, and scalable deployment. Lowers entry barriers for developers while keeping professional-grade performance. | Flagship high-performance quadruped platform for immediate industrial deployment. Prioritizes maximum payload, endurance, and speed for demanding field operations. |
Core Performance vs. Weight
| A2 | B2 |
| Self-weight ~30 kg, maximum payload 100 kg static (30 kg sustained walking load in summer conditions). Lighter body improves handling, shipping, and deployment flexibility. | Self-weight 60+ kg, maximum payload >40–50 kg (industrial applications like inspection, logistics). Heavy frame increases stability for extreme terrains but makes transport more challenging. |
Endurance & Thermal Performance
| A2 | B2 |
| Hot weather (Hangzhou summer) benchmarks: No load: 4h 12min, 21 km | 30 kg Load: 3h, 12.5 km Demonstrates strong endurance even under heat stress, critical for industrial inspection in hot climates. |
Public data indicates strong endurance but not explicitly optimized for high-temperature energy efficiency like A2 |
Sensor & System Integration
| A2 | B2 |
| Industrial-grade LiDAR as standard across all variants, plus dual hot-swappable battery system. This makes it more developer-friendly for out-of-box mapping, navigation, and SLAM integration. | Supports high-end 3D LiDAR and multi-sensor fusion; configuration depends on client order. |
Development & Ecosystem Impact
| A2 | B2 |
| Designed to accelerate robotics ecosystem growth by providing >85% of B2’s mobility performance at a much lower weight and price point, with an SDK-friendly architecture. | Best suited for end-users needing immediate deployment with minimal customization — e.g., law enforcement, energy sector, defense R&D. |
Application Focus
| A2 | B2 |
| PoC projects, R&D, training, and scalable industrial solutions where cost, weight, and dev-friendliness matter more than absolute max performance. | Rugged, heavy-duty missions with highest mobility & stability demands, extreme terrain, or heavy-load tasks. |
| Manufacturer | Unitree |
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