As2 battery, 8000mAh or 15000mAh
Unitree's own lithium battery for the Unitree As2 robot dog. It comes in two sizes: a standard 8000mAh pack on the As2 Air and a long-range 15000mAh, 648 Wh pack on the Pro, X and EDU. Unitree calls it an intelligent battery and does not name the company that makes the cells.
In-houseMade by the robot's own company for its robots. Not sold to anyone else.
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Key numbers
- Standard pack
- 8000mAh, As2 Air
- Long-range pack
- 15000mAh, 648 Wh, As2 Pro, X and EDU
- Robot supply voltage
- 36 to 50.4 V
- Walking time, unloaded
- about 2 hours with the standard pack, about 4 hours with the long-range pack
- Walking time, loaded
- over 2.5 hours carrying 15 kg on the X and EDU
- Charger
- 50.4 V 4 A standard on the Air, 50.4 V 7.4 A fast charger on the Pro, X and EDU
Unitree, As2 product pageunitree.com
How to get it
In-houseUnitree's store does not list As2 batteries on their own as of 2 Nov 2026; a spare means asking Unitree's sales team.
It cannot be bought on its own. To get one, you would buy a robot that has it, from the list below.
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Numbers and listed prices on this page come from the sources shown. Anything marked as our analysis, our read or our estimate is our own view and has not been confirmed by any company. Last checked 2 Nov 2026. How we verify
