Unitree quadruped robot
Unitree A2
The Unitree A2 is a mid-size robot dog with a 25 kg effective load and up to 5 hours of walking, sold by Stokes Robotics in Standard and Pro configurations for logistics, inspection, and research.
37 kg
Weight
25 kg
Load
5 h
Endurance
~5 m/s
Top speed
Starting at $31,900.00
Paying with a purchase order or need a formal quote for approval? Request a quote and our sales team will build it with you.
Secure online checkout
Headquarters in Carl Junction, Missouri, USA
Curriculum and operator training available
Overview
Unitree A2 at a glance
01
Carries a real load
25 kg effective load, with about 3 hours of walking at that weight.
02
Hot-swap power
A dual-bay battery system, with about 1 hour to charge each battery.
03
Built for development
An Intel Core i7 for user development and high- and low-level secondary development.
04
Pro navigation
The Pro adds a second LiDAR, SLAM mapping, autonomous navigation, GPS, and 4G.
What it is
A mid-size robot dog built to carry
The Unitree A2 sits between the compact Go2 and the industrial B2. It weighs about 37 kg with dual batteries, carries a 25 kg effective load, and walks for about 5 hours without a load.
Stokes Robotics sells the A2 in Standard and Pro configurations. Both support high-level and low-level secondary development. The Pro adds a second LiDAR, GPS, 4G, and a high-performance expansion dock for SLAM mapping and autonomous navigation.
Where the A2 works
Built for three kinds of work
Logistics
Carry a 25 kg load for about 3 hours and 12.5 km on one charge.
Industrial inspection
LiDAR, a wide-angle camera, and IP56 protection, or IP56 to IP67 on the Pro.
Emergency response
Climbs 30 cm stairs and single steps up to 100 cm.
Specifications
Unitree A2 specifications
Figures come from Unitree Robotics published specifications and Stokes Robotics product data. Figures vary by configuration.
| Specification | Unitree A2 |
|---|---|
| Size and weight | |
| Standing (L × W × H) | 820 × 440 × 570 mm |
| Folded (L × W × H) | 720 × 550 × 220 mm |
| Weight | About 31 kg without battery, about 37 kg with dual batteries |
| Performance | |
| Speed | 0 to 3.7 m/s, about 5 m/s maximum |
| Load | 25 kg effective, 100 kg maximum standing load |
| Stairs | 30 cm maximum continuous stair height |
| Single step | Up to 100 cm |
| Maximum slope | 45° |
| Degrees of freedom | 12 |
| Maximum joint torque | About 180 N·m |
| Endurance | |
| Without load | 5 hours, about 20 km |
| With a 25 kg load | 3 hours, about 12.5 km |
| Power | |
| Battery | Dual-bay system, 9000 mAh (453.6 Wh) per battery, 18000 mAh (907.2 Wh) with two |
| Charging | About 1 hour per battery |
| Operating temperature | -20 to 55 °C |
| Sensing and computing | |
| LiDAR | 1 (Standard), 2 front and rear (Pro) |
| Camera | 1 wide-angle camera, expandable to 2 |
| Computing | 8-core CPU (platform) and Intel Core i7 (user development). Pro adds a high-performance expansion dock for 3 computing modules |
| Pro navigation | SLAM mapping and autonomous navigation, wireless vector positioning, GPS, and 4G |
| Protection rating | IP56 (Standard), IP56 to IP67 with IP67 core components (Pro) |
| Connectivity and development | |
| Wireless | Wi-Fi 6, Bluetooth 5.2 |
| Interfaces | 2 × RS485, 2 × CAN, 2 × Gigabit Ethernet, 4 × USB 3.0 Type-C, 12 V, 24 V, and battery power outputs |
| Development | High-level and low-level secondary development, with robot models and simulation interfaces for environments such as Isaac Sim |
| Audio and lighting | Speaker, microphone, and lighting |
| Warranty | |
| Coverage | 1 year |
Source: Unitree Robotics published specifications and Stokes Robotics product data for the A2. Configuration options change what is installed. Your quote lists the exact configuration.
Choose your starting point
What's included
Out of the box, and what you can add
Unitree A2 robot
Standard or Pro
Battery
9000 mAh (453.6 Wh)
Battery charger
58.8 V, 7 A
Remote controller
Handheld
Onsite Setup and Training
We set up the robot at your site and train the people who will run it. Training materials included.
+ $5,000.00
Online Training
Online training for the people who will run the robot, with training materials included.
+ $2,500.00
Battery and Controller Upgrade (A2)
Two extra batteries, a digital controller, and a joystick controller for the Unitree A2 and A2-W.
+ $3,000.00
Connectivity Package
A laptop with preloaded software, a Wi-Fi router that gives the robot its own stand-alone network, and a phone for touch-screen control and a live camera view.
+ $5,000.00
STEMBOTICS Curriculum License
STEMBOTICS curriculum license for classroom robotics programs, from a Stokes Robotics team that has written robotics curriculum since 2013.
+ $4,000.00
What Stokes Robotics adds
More than the hardware
Secondary development
Our Stokes packages come with software and hardware set up for the way you will use the robot.
Curriculum
Our team has written STEM curriculum since 2005 and robotics curriculum since 2013.
Training
Onsite and online training for the people who run the robot day to day.
Buying
Two ways to buy Unitree A2
Buy online
Checkout now
- Choose your configuration and add-ons
- Check out securely online
- We prepare your robot before it ships
- Training is scheduled if you added it
Request a quote
Buy through your organization
- Tell us where the robot will work
- We talk through your site and configuration
- You get a written quote for approval
- The robot ships once the order is placed
Questions
Unitree A2 FAQ
The Pro has every Standard feature plus a second LiDAR, a wireless vector positioning module, GPS, 4G, and a high-performance expansion dock that brings the built-in computing modules to three. It adds SLAM mapping and autonomous navigation, with IP67-rated core components.
Unitree lists 5 hours and about 20 km of walking without a load, and 3 hours and about 12.5 km with a 25 kg load, on the dual-battery system.
Yes. The A2 supports high-level and low-level secondary development, with an Intel Core i7 dedicated to user development and robot models and simulation interfaces for environments such as Isaac Sim.
The A2 stands 820 × 440 × 570 mm and folds to 720 × 550 × 220 mm. It weighs about 37 kg with dual batteries.
Yes. We offer onsite setup and training and online training for the people who will run the Unitree A2, before and after the sale. Both are optional add-ons you can choose at checkout or in your quote request.
Yes. Choose your configuration, add-ons, and quantity, then check out online. If your school, agency, or company needs a purchase order or a formal quote, request a quote and our sales team will build it with you.
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SHEP-W
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Next step
Put Unitree A2 to work
Order online today, or tell us where the robot will work and our sales team will put together a quote.