Unitree A2

  • Industrial quadruped, “Stellar Explorer” platform

  • ~37 kg with batteries (31 kg without)

  • Dual hot-swappable batteries: 9,000 mAh each (18,000 mAh total)

  • Endurance: ~5 h / ~20 km no-load; ~3 h / ~12.5 km with 25 kg load

  • Load: ~100 kg max standing; ~25 kg continuous walking

  • Speed: 0–3.7 m/s (up to ~5 m/s)

  • Sensing: dual LiDAR (front & rear) + HD camera + front light

  • IP rating: IP56 overall (core components up to IP67)

  • Terrain: ~45° slope, 30 cm step, 0.5–1 m climb

  • Compute & I/O: 8-core CPU + Intel Core i7 (dev), Wi-Fi 6/BT 5.2, RS485×2, CAN×2, GbE×2, USB-C×4, 12V/24V/BAT power out

  • Options: wheel-leg kit, GPS/4G, vector-follow module

Description

Category Parameter A2 (Standard) A2-PRO
Mechanical Size (standing) 820 × 440 × 570 mm 820 × 440 × 570 mm
Size (lying) 720 × 550 × 220 mm 720 × 550 × 220 mm
Material Aluminum alloy + high-strength engineering plastic Same
Weight (no battery) ≈31 kg ≈31 kg
Weight (with battery) ≈37 kg ≈37 kg
DoF (motors) 12 12
Joint bearings Industrial crossed-roller Same
Joint motors Low-inertia, high-speed inner-rotor PMSM Same
Max joint torque ≈180 N·m ≈180 N·m
Range of motion body −58°~58°; thigh −134°~180°/−89°225°; shank −158°−30° Same
Electrical Supply voltage 50.4 V 50.4 V
Encoders Dual encoders Dual encoders
Cooling Local air cooling Local air cooling
Power slots Dual slots, dual batteries Dual slots, dual batteries
Battery capacity Single 9000 mAh (453.6 Wh); Dual 18000 mAh (907.2 Wh) Same
Connectivity & I/O Wireless Wi-Fi 6, Bluetooth 5.2 Same
Audio Speaker; microphone array Same
Lights Front light Front light
Optional modules Vector-follow (optional), GPS (optional), 4G (optional) Vector-follow (optional), GPS (optional), 4G (optional)
Interfaces RS485×2, CAN×2, GbE×2, USB-C (CPU)×2, USB-C (i7)×2; power out 12V/24V/BAT Same
Sensing Sensors 1× LiDAR + 1× HD camera 2× LiDAR + 1× HD camera
Compute Onboard compute 8-core high-perf CPU (platform) + Intel Core i7 (user dev) Same (high-compute dock optional)
Performance Operating temp −20 °C ~ 55 °C −20 °C ~ 55 °C
Endurance / range >5 h no-load (~20 km) >5 h no-load (~20 km)
>3 h with 25 kg (~12.5 km) >3 h with 25 kg (~12.5 km)
Max standing load ≈100 kg ≈100 kg
Continuous walking load ≈25 kg ≈25 kg
Slope capability ≈45° ≈45°
Stairs Max step height 30 cm 30 cm
Max climb height ≈0.5–1 m ≈0.5–1 m
Speed 0–3.7 m/s (up to ~5 m/s) Same
Wheel-leg kit Optional Optional
Protection & Support Ingress rating IP56 IP56–IP67 (core components IP67)
Updates & SDK Smart OTA; secondary development supported Same
Unitree A2

The Unitree A2 brings next-gen legged mobility to real-world tasks. Built on high-torque actuators and precise, real-time control, A2 confidently traverses stairs, gravel, and uneven ground while keeping its balance. Its perception stack supports multi-sensor fusion for mapping and obstacle avoidance, and you can deploy it in minutes via teleoperation or build full autonomy with the ROS/ROS 2-compatible SDK. With payload mounting points and power/data interfaces, A2 is a flexible platform for inspection, patrol, research, demos, and field robotics.

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