Genuine Unitree Parts
Unitree B2-W Accessories
Unitree B2-W accessories are the official add-ons and spare parts for the wheel-legged B2, and almost all are shared with the legged B2. Power is the one exception: the B2-W ships with the BT2-11 cold-weather battery, also takes the fast-charging BT2-12, and skips the BT2-10 standard pack. The rest of the line: B2 charger, contact charger kit, protective bracket, and three compute paths from the i7 board to the 550 TOPS AGX module.
Prices are confirmed per quote with current stock and lead time. We ship worldwide via DHL or FedEx; lithium batteries travel as regulated air cargo in UN38.3-compliant packaging.
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Genuine Unitree B2-W Accessories, Quoted to Order
Every accessory here is genuine Unitree hardware — the same parts that ship with the robot or that Unitree sells as official spares. We don't list compatible-with clones: if Unitree doesn't make it for the B2-W, it isn't on this page.
- Step 1Send an inquiry
One line per part with the quantities you need — that's all it takes to start.
- Step 2Get a confirmed quote
We reply with a quote confirming current stock, lead time and shipping to your country.
- Step 3Worldwide dispatch
Confirm the quote and your order ships via DHL or FedEx with tracking.
B2-W Accessory Specifications at a Glance
Key parameters for the accessory lines on this page, taken from Unitree's official documentation. Full specifications live on each product page.
| Key Specifications | Notes | |
|---|---|---|
| Battery — Cold-Weather (BT2-11) | 37800mAh · 1852.2Wh · DC 50.4V · charges down to -20°C | Factory fit on the B2-W — the pack it ships with |
| Battery — High-Temp (BT2-12) | 40500mAh · 2041.2Wh · DC 50.4V · discharges up to +80°C | Fits the B2-W — full charge in about 1 hour on the B2 charger |
| Battery Charger (B2-CHARGER) | 58.8V output · 100–240V worldwide input | Ships in the box with every B2-W — BT2-11 full in ≈2.5–3 hours, BT2-12 in ≈1 hour |
| Autonomous Charging Station | B2 Contact Charger Kit (B2-CHARGER-KIT) — drive-on contact dock | Belly charging electrodes are factory standard on the B2-W; autonomous docking takes custom software and on-site deployment |
| Protective Bracket | Freestanding double-column gantry on casters for commissioning and development | One frame serves the B2-W and the legged B2 — nothing mounts to the robot |
| Computing Board — Intel Core i7 | The x86 user-development computer shipped as standard in every B2-W | Also fills the optional compute slots — up to 3 devices, i7 or NVIDIA Orin NX |
| Computing Board — NVIDIA Jetson Orin | Internal GPU computing board — 100 TOPS · Orin NX 16GB · 8-core Arm · 2TB storage | Fits the same optional compute slots as the i7 — the CUDA alternative |
| AGX Module — 275 / 550 TOPS | External NVIDIA Jetson AGX Orin compute — 275 TOPS single or 550 TOPS dual | Mounts on the robot's rear — no internal disassembly; fits B2-W & B2 |
B2-W Accessory Fit at a Glance
What fits the wheeled B2-W, per Unitree's official documentation. The B2-W shares almost the whole accessory line with the legged B2 — the battery factory fit is where the two robots differ, and the matrix below flags the two parts that belong to the legged B2 alone.
| Fits B2-W | Notes | |
|---|---|---|
| Battery — Cold-Weather BT2-11 | Factory fit | The pack the B2-W ships with — charges at ambient temperatures down to -20°C |
| Battery — High-Temp BT2-12 | Fits | Heat-duty pack for the B2-W with 1-hour fast charging on the B2 charger |
| Battery — Standard BT2-10 | The factory pack of the legged B2 — not recommended for the B2-W | |
| Battery Charger (B2-CHARGER) | Ships in the box with every B2-W — charges both BT2-11 and BT2-12 packs | |
| Autonomous Charging Station | B2 Contact Charger Kit — belly charging electrodes are factory standard on the B2-W | |
| Protective Bracket | Freestanding commissioning gantry — one frame serves both the B2-W and the B2 | |
| Computing Board — Intel Core i7 | Standard fit | Factory-fit user-development board in every B2-W; also the unit for the optional compute slots |
| Computing Board — NVIDIA Jetson Orin | Internal GPU option for the optional compute slots — the CUDA counterpart to the i7 | |
| AGX Module — 275 / 550 TOPS | External rear mount — one module family fits the B2-W and the legged B2 | |
| Foot Pad | Replacement wear part for the legged B2's feet — the wheeled B2-W doesn't use it |
Which B2-W Accessory Do You Need?
Most B2-W fleets start with power: a spare BT2-11 pack doubles effective session length, and rotating batteries through the quick-swap bay keeps the robot working through a full shift. Everything else depends on where your robot works and what it does for a living.
The BT2-11 cold-weather pack the B2-W ships with, the BT2-12 high-temperature pack with 1-hour fast charging for heat-duty sites, and the B2 charger that keeps both topped up — the parts that decide how long a session runs and how fast you are back on the ground.
The B2 Contact Charger Kit gives the B2-W a drive-on dock to recharge in place through its belly electrodes — the ground half of unattended operation, with self-docking delivered as a software project.
The freestanding protective bracket frames the robot's work area through commissioning, calibration and software development — guarding the B2-W in the sessions where new code makes falls and bumps likely.
Three official compute paths: the Intel Core i7 board standard in every B2-W, the NVIDIA Jetson Orin computing board (100 TOPS) as the internal GPU option, and the external NVIDIA Jetson AGX module — 275 or 550 TOPS on the robot's rear for the heaviest AI stacks.
International Shipping for B2-W Batteries and Parts
Every order ships via DHL or FedEx with tracking, door to door.
Lithium batteries travel as regulated air cargo in UN38.3-compliant packaging — battery-only parcels can take a few days longer than ordinary freight.
Chargers, the contact charger kit, the protective bracket, the computing boards and the AGX module contain no lithium cells and ship as standard freight — the bracket as an oversized parcel; mixed orders get exact timing in your quote.