Unitree B2 Standard Battery (B2-SBATTERY)

A quadruped is only as useful as the hours it can stay out on the route. The Unitree B2 Standard Battery (B2-SBATTERY) is the pack that sets those hours for the Unitree B2 robot: a 45Ah, 2250Wh power source that is built to be swapped rather than waited on. For teams that depend on a walking robot, the battery is not an accessory in the background. It decides how far the machine goes, how often it comes home, and how quickly it goes out again.

The Unitree B2 Standard Battery (B2-SBATTERY) is available through this page, by quotation.

Background

Unitree and the B2 line

Unitree Robotics is known for legged robots, from compact models used in teaching and research to larger quadrupeds meant for demanding fieldwork. The B2 sits at the heavier, more industrial end of that range, where the work is inspection, patrol, data collection and carrying sensors through places that wheeled vehicles struggle to reach. Robots of that kind spend long hours away from a wall socket, so the energy system matters as much as the legs.

Around the B2, Unitree offers supporting parts such as controllers and spare power packs. Teams that run a quadruped seriously usually think about these items together, because a robot without a charged battery is only an expensive static object. You can browse related parts in the Accessories category and see the other packs in the range in the Batteries category.

What the Standard Battery is

The B2-SBATTERY is the standard battery for the Unitree B2. It has a capacity of 45Ah and a rated energy of 2250Wh, and it operates at 58V, which ensures compatibility and performance with the Unitree B2 robot. Its maximum charging current is 15A. The pack uses a plug-in design, so a battery swap is a quick handover rather than a workshop job.

In practical terms, the pack is the part of the B2 system that turns a day's plan into a day's work. With a plug-in format, a team can keep a charged spare ready and replace the pack when the robot returns, keeping downtime short and the operation moving.

Technical Specifications

Specifications as published by the manufacturer; confirmed against the datasheet at quotation.

The manufacturer has not published the battery weight, the battery dimensions, the cell chemistry, the charging time, the operating temperature range, the IP rating, the cycle life or the contents of the box; they are confirmed at quotation.

What makes the B2 Standard Battery suited to long operation?

The answer begins with the numbers. A capacity of 45Ah at 58V gives a rated energy of 2250Wh, and that is the figure behind the runtime: the B2 can run continuously for up to 4–6 hours, depending on workload and terrain. That range is worth reading carefully. A robot walking steadily across flat ground draws differently from one climbing, carrying a heavy sensor head or working through rough ground, so the same pack will give a different number of hours on different days.

For planning, this means the runtime is a working window rather than a fixed promise for every job. Teams that map out their routes usually test the first few missions, note how long the robot lasts on their own terrain, and then plan swaps around what they see. The pack gives a generous starting point for that kind of planning.

The second reason is the plug-in design. It allows swift battery swaps, minimizing downtime and keeping operations running smoothly. A long runtime and a fast swap work together: the first stretches the time between stops, and the second shortens each stop. A crew with two or more packs can keep a robot working through a whole shift with only brief pauses.

Is the B2 Standard Battery compatible with other Unitree robots?

The one compatible robot is the Unitree B2 quadruped. The 58V operating voltage ensures compatibility and optimal performance with that robot. No other robot is named, so this page does not suggest that the pack fits any other model.

That matters because Unitree makes several quadrupeds, and their packs differ. Smaller robots use lower-voltage packs with much smaller capacities, and those are separate products. If you are buying for a different robot, look at the pages for the other packs, for example the Unitree A2 Battery (single battery) or the Unitree Go2 Standard Version Battery. Each is made for its own robot, so always match the pack to the platform.

Who is the Unitree B2 Standard Battery for?

The first group is owners of a Unitree B2 who need a spare. A second pack changes the way the robot is used, because one battery can charge while the other works. For any team that runs the robot on a schedule, this is the most natural purchase.

The second group is industrial and utility teams that use the B2 for inspection and patrol. Their days are long, their sites are often far from a power point, and their time with the robot is limited. A pack with a runtime of up to 4–6 hours, depending on workload and terrain, and a plug-in swap, fits that rhythm.

The third group is research and university labs. A lab that runs experiments with the B2 benefits from a predictable power source and the ability to swap quickly between trials, rather than waiting for a recharge between each run.

The fourth group is integrators and distributors who supply B2 systems to end customers across the Caribbean and beyond. They often keep spare packs in their support kit so that a customer's robot is never idle for long. Teams that also need the wireless remote can look at the Unitree R3 Controller, which is listed for the B2 among other Unitree robots.

What is the Unitree B2 Standard Battery used for?

1. Powering the B2 in the field. It is the standard energy source for the Unitree B2 on inspection, patrol and survey work.
2. Swapping during a shift. The plug-in design lets a charged pack replace a depleted one with little delay.
3. Extending a mission plan. A second pack lets a team plan longer days around a runtime of up to 4–6 hours per pack, depending on workload and terrain.
4. Supporting research trials. Labs use spare packs to run repeated tests without long waits between sessions.
5. Keeping a demonstration running. Integrators and trainers use a spare to keep a robot on show through a full day of events.
6. Replacing a pack in service. It serves as a like-for-like replacement when an existing B2 battery needs to be renewed.

Pricing and Availability

This page does not print prices. Every order for the Unitree B2 Standard Battery (B2-SBATTERY) starts with a quotation, which lets us confirm the details of your robot and your order before anything is committed. Delivery, customs and support are arranged with the quotation, so you know what to expect before you decide. Send us your request and the Unitree B2 Standard Battery (B2-SBATTERY) is available on this page.

Frequently Asked Questions

What is the capacity of the Unitree B2 Standard Battery?

The capacity is 45Ah, with a rated energy of 2250Wh at 58V.

How long does the B2 run on one battery?

The B2 can run continuously for up to 4–6 hours, depending on workload and terrain.

Which robot does this battery fit?

It is made for the Unitree B2 quadruped robot. No other robot is named as compatible.

Can I swap the battery quickly?

Yes. The plug-in design allows swift battery swaps, which keeps downtime short.

What is the maximum charging current?

The maximum charging current is 15A.

Is the battery suited to inspection work?

Yes. The B2 is used for inspection and patrol, and this pack is its standard energy source, with a plug-in design that keeps changeovers short.

Where can I buy the Unitree B2 Standard Battery and what does it cost?

You can buy it through this page, by quotation. We do not print prices here; the cost is given in the quotation, together with delivery, customs and support arrangements.

Summary

The question at the start was how many hours a quadruped can stay out on the route. For the Unitree B2, the Unitree B2 Standard Battery (B2-SBATTERY) gives a clear answer: 45Ah, 2250Wh at 58V, a runtime of up to 4–6 hours depending on workload and terrain, and a plug-in design that makes the swap quick. If you run a B2 and want to keep it working, this page is the starting point.