Unitree A2 (Stellar Hunter)
🇨🇳 Unitree Robotics · China
An industrial quadruped: ~100 kg max standing load, ~25 kg while walking continuously, ~20 km per charge, IP56 rated — built for inspection and carrying loads into places wheels cannot reach
Photo: Sgt. Amber Edwards · Wikimedia Commons (Public domain) · stand-in photo of the Unitree B2, not an A2
Key specs
- Payload
- 100 kg
- Weight
- 42 kg
- Speed
- 3.7 m/s
- Battery
- 5 h
- IP Rating
- IP56
Common use cases
- ▸ Plant and facility inspection
- ▸ Carrying loads where wheeled carts cannot go
- ▸ Rescue and field survey work
- ▸ Locomotion research on real terrain
Tags
The A2 is Unitree’s heavy-duty quadruped
Unitree launched the A2 “Stellar Hunter” on August 8, 2025, positioning it as a four-legged robot for industrial and rough-terrain work — inspection, carrying loads and field tasks.
Specs from the official unitree.com product page:
| Item | Value |
|---|---|
| Weight | ~42 kg (with battery) · ~35 kg (without) |
| Standing dimensions | 820 × 440 × 570 mm |
| Max standing load | ~100 kg |
| Continuous walking load | ~25 kg |
| Speed | 0–3.7 m/s (up to ~5 m/s) |
| Range / time, unloaded | >5 h · ~20 km |
| Range / time, 25 kg load | >3 h · ~12.5 km |
| Slope walking | ~45° |
| Max step height | 30 cm |
| Operating temperature | -20°C to 55°C |
| Battery | Dual-battery system, 18,000 mAh (907.2 Wh) |
A2 vs A2-PRO: the standard A2 carries one LiDAR plus one HD camera and is rated IP56; the A2-PRO adds a second LiDAR (front and rear) and is rated IP56–IP67.
Note: Unitree’s own launch post gave a total weight of “~37 kg”, while the current official spec page lists ~42 kg with battery — this page follows the official spec page.
Why it sits under Vision & Inspection
This catalog has no separate quadruped category, so the A2 is filed alongside the Unitree B2, the brand’s other industrial four-legged robot, under Vision & Inspection. The smaller Unitree Go2 was filed under a different category from the start.
Price
Unitree did not disclose an A2 price in its launch announcement, and the official store directs buyers to contact sales. There is no official Thai retail price from a distributor either, so the price field on this page is left empty rather than estimated.
