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Description
Unitree Robotics — Official Accessory
Unitree Fast Charger
Official Fast Battery Charger for Unitree A2, A2-W & As2-W Quadruped Robots. 50.4 V / 7.4 A / 373 W output, 100–240 V universal AC input, 1.5-hour standard battery charge, 2.5-hour long-life battery charge. High-power, compact, and built with Unitree's multi-layer safety protection.
50.4V
Output Voltage
7.4A
Output Current
373W
Output Power
1.5h
Standard Charge
100-240V
Universal Input
Product Overview
The Unitree Fast Charger is the official high-power power adapter designed specifically for Unitree A2, A2-W, and As2-W quadruped robot batteries. Delivering a stable 50.4 V DC output at 7.4 A (373 W total power), it provides 85% faster charging compared to the Standard Charger — getting your robot back into action in a fraction of the time. The charger accepts a wide 100–240 V AC input at 50/60 Hz, making it suitable for use worldwide with the appropriate regional power cable. Its compact form factor — 190 × 11 × 45.2 mm — makes it easy to transport and store alongside your robot. The Fast Charger fully recharges a standard battery in approximately 1.5 hours and a long-life battery in approximately 2.5 hours — ideal for rapid turnaround between missions, competitive events, and high-intensity deployment schedules. Built with Unitree's multi-layer safety protection system, it safeguards against overcharge, short circuit, over-temperature, and over-current conditions.
✓ Official Unitree Accessory
Genuine Unitree charger designed and tested specifically for A2, A2-W, and As2-W robot batteries. Ensures optimal charging performance and battery longevity.
✓ Universal AC Input
Wide input range 100–240 V~ 50/60 Hz with 6.0 A max input current. Compatible with power outlets worldwide — just use the appropriate regional AC cable.
✓ High-Power DC Output
Regulated 50.4 V DC at 7.4 A output delivers 373 W of continuous charging power. 85% more power than the Standard Charger for dramatically faster charge times.
✓ Multi-Layer Safety Protection
Built-in safeguards against overcharge, short circuit, excessive temperature, over-current, and over-voltage. Automatic shutoff when the battery reaches full charge.
✓ Interchangeable Compatibility
The A2, A2-W and As2-W batteries are interchangeable — this single charger works with all three robot platforms. Simplify your charging infrastructure across multiple Unitree quadrupeds.
✓ Compact & Portable
Dimensions of just 190 × 11 × 45.2 mm. Lightweight and easy to pack in equipment cases, robot transport bags, or field kits for on-location charging.
Charging Times — Fast vs. Standard Charger
The Unitree Fast Charger delivers 85% more power than the Standard Charger, cutting charge times dramatically. Compare the two configurations:
~1.5h
Standard Battery
Fast Charger (vs 2.5h standard)
~2.5h
Long-Life Battery
Fast Charger (vs 4h standard)
The Fast Charger is the ideal choice for high-intensity deployment schedules, competitive robotics events, and time-critical field operations where minimizing downtime between missions is essential. For overnight charging or laboratory environments where speed is less critical, the Standard Charger (50.4 V, 4 A) provides a gentler charge profile that may extend overall battery cycle life.
Safety First — Multi-Layer Protection
Despite its higher power output, the Unitree Fast Charger incorporates the same comprehensive safety mechanisms as the Standard Charger to protect both the battery and the charging environment:
- Overcharge Protection — Automatically terminates charging when the battery reaches full capacity, preventing cell damage and thermal runaway.
- Short Circuit Protection — Instant cut-off if a short is detected in the output circuit, protecting both charger and battery.
- Temperature Protection — Monitors internal and battery temperature during charging; reduces current or pauses charging if safe thresholds are exceeded.
- Over-Current Protection — Limits output current to the rated 7.4 A, preventing excessive current draw that could damage battery cells.
- Over-Voltage Protection — Regulates output voltage within the 50.4 V ± tolerance window, ensuring consistent and safe charging voltage.
- Automatic Shutoff — The charger enters a low-power standby state once charging is complete, minimizing energy consumption and heat generation.
Compatibility — A2, A2-W & As2-W Interchangeable
The A2, A2-W and As2-W robot platforms share the same battery architecture, making this charger fully interchangeable across all three models. Whether you operate an A2 for indoor research, an A2-W for outdoor wheeled-leg missions, or an As2-W for next-generation autonomous exploration, a single Fast Charger handles all battery packs. This simplifies logistics for labs, research institutions, and deployment teams running mixed fleets of Unitree quadrupeds.
Usage Guidelines & Best Practices
To maximize battery life and ensure safe operation with the higher-power Fast Charger, follow these best practices:
- Cool Before Charging — Do not charge the battery immediately after heavy use. Wait for the battery to cool to near room temperature before connecting the charger. Charging a hot battery significantly reduces cell lifespan.
- Ideal Temperature Range — Charge in an environment between 5°C and 40°C for optimal battery health and charging efficiency.
- Well-Ventilated Area — The Fast Charger generates more heat than the Standard Charger. Place the charger and battery on a hard, non-flammable surface with generous airflow around the unit. Never charge inside enclosed bags or cases.
- Supervised Charging — It is recommended to charge within sight, especially during the first few charge cycles with a new battery or when using the Fast Charger for the first time.
- Disconnect When Full — Although the charger has automatic shutoff, it is good practice to disconnect the battery from the charger once charging is complete.
- Use Only Official Chargers — Third-party chargers may not provide the correct voltage regulation or safety protections. Unitree does not warrant batteries damaged by non-official chargers.
Technical Specifications
| Parameter | Unitree Fast Charger |
| Product Dimensions | 190 mm × 11 mm × 45.2 mm |
| Input Voltage | AC 100 V – 240 V~ |
| Input Frequency | 50 / 60 Hz |
| Max Input Current | 6.0 A |
| Output Voltage | DC 50.4 V |
| Output Current | 7.4 A |
| Output Power | 373 W |
| Standard Battery Charge Time | Approximately 1.5 hours |
| Long-Life Battery Charge Time | Approximately 2.5 hours |
| Compatible Models | Unitree A2, Unitree A2-W, Unitree As2-W (batteries are interchangeable) |
| Safety Protections | Overcharge, short circuit, over-temperature, over-current, over-voltage, automatic shutoff |
| Warranty | 12 months |
Charger Comparison
Choose the charger that matches your operational needs:
| Feature | Standard Charger | Fast Charger |
|---|---|---|
| Output | 50.4 V, 4.0 A, 201 W | 50.4 V, 7.4 A, 373 W |
| Standard Battery | ~2.5 hours | ~1.5 hours |
| Long-Life Battery | ~4 hours | ~2.5 hours |
| Compatible Models | A2 series | A2 series |
| Best For | Overnight charging, labs, gentle charge profile | Rapid turnaround, competitions, field ops |
| Dimensions | 190 × 11 × 45.2 mm | 190 × 11 × 45.2 mm |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The A2, A2-W and As2-W batteries are interchangeable — this charger works with all three platforms.
* Charge times are approximate and depend on ambient temperature, battery condition, and starting charge level.
* Always use official Unitree chargers. Third-party chargers may void warranty and damage the battery.
* Unitree is a registered trademark of Unitree Robotics.
Description
Unitree Robotics — Official Accessory
Unitree Fast Charger
Official Fast Battery Charger for Unitree A2, A2-W & As2-W Quadruped Robots. 50.4 V / 7.4 A / 373 W output, 100–240 V universal AC input, 1.5-hour standard battery charge, 2.5-hour long-life battery charge. High-power, compact, and built with Unitree's multi-layer safety protection.
50.4V
Output Voltage
7.4A
Output Current
373W
Output Power
1.5h
Standard Charge
100-240V
Universal Input
Product Overview
The Unitree Fast Charger is the official high-power power adapter designed specifically for Unitree A2, A2-W, and As2-W quadruped robot batteries. Delivering a stable 50.4 V DC output at 7.4 A (373 W total power), it provides 85% faster charging compared to the Standard Charger — getting your robot back into action in a fraction of the time. The charger accepts a wide 100–240 V AC input at 50/60 Hz, making it suitable for use worldwide with the appropriate regional power cable. Its compact form factor — 190 × 11 × 45.2 mm — makes it easy to transport and store alongside your robot. The Fast Charger fully recharges a standard battery in approximately 1.5 hours and a long-life battery in approximately 2.5 hours — ideal for rapid turnaround between missions, competitive events, and high-intensity deployment schedules. Built with Unitree's multi-layer safety protection system, it safeguards against overcharge, short circuit, over-temperature, and over-current conditions.
✓ Official Unitree Accessory
Genuine Unitree charger designed and tested specifically for A2, A2-W, and As2-W robot batteries. Ensures optimal charging performance and battery longevity.
✓ Universal AC Input
Wide input range 100–240 V~ 50/60 Hz with 6.0 A max input current. Compatible with power outlets worldwide — just use the appropriate regional AC cable.
✓ High-Power DC Output
Regulated 50.4 V DC at 7.4 A output delivers 373 W of continuous charging power. 85% more power than the Standard Charger for dramatically faster charge times.
✓ Multi-Layer Safety Protection
Built-in safeguards against overcharge, short circuit, excessive temperature, over-current, and over-voltage. Automatic shutoff when the battery reaches full charge.
✓ Interchangeable Compatibility
The A2, A2-W and As2-W batteries are interchangeable — this single charger works with all three robot platforms. Simplify your charging infrastructure across multiple Unitree quadrupeds.
✓ Compact & Portable
Dimensions of just 190 × 11 × 45.2 mm. Lightweight and easy to pack in equipment cases, robot transport bags, or field kits for on-location charging.
Charging Times — Fast vs. Standard Charger
The Unitree Fast Charger delivers 85% more power than the Standard Charger, cutting charge times dramatically. Compare the two configurations:
~1.5h
Standard Battery
Fast Charger (vs 2.5h standard)
~2.5h
Long-Life Battery
Fast Charger (vs 4h standard)
The Fast Charger is the ideal choice for high-intensity deployment schedules, competitive robotics events, and time-critical field operations where minimizing downtime between missions is essential. For overnight charging or laboratory environments where speed is less critical, the Standard Charger (50.4 V, 4 A) provides a gentler charge profile that may extend overall battery cycle life.
Safety First — Multi-Layer Protection
Despite its higher power output, the Unitree Fast Charger incorporates the same comprehensive safety mechanisms as the Standard Charger to protect both the battery and the charging environment:
- Overcharge Protection — Automatically terminates charging when the battery reaches full capacity, preventing cell damage and thermal runaway.
- Short Circuit Protection — Instant cut-off if a short is detected in the output circuit, protecting both charger and battery.
- Temperature Protection — Monitors internal and battery temperature during charging; reduces current or pauses charging if safe thresholds are exceeded.
- Over-Current Protection — Limits output current to the rated 7.4 A, preventing excessive current draw that could damage battery cells.
- Over-Voltage Protection — Regulates output voltage within the 50.4 V ± tolerance window, ensuring consistent and safe charging voltage.
- Automatic Shutoff — The charger enters a low-power standby state once charging is complete, minimizing energy consumption and heat generation.
Compatibility — A2, A2-W & As2-W Interchangeable
The A2, A2-W and As2-W robot platforms share the same battery architecture, making this charger fully interchangeable across all three models. Whether you operate an A2 for indoor research, an A2-W for outdoor wheeled-leg missions, or an As2-W for next-generation autonomous exploration, a single Fast Charger handles all battery packs. This simplifies logistics for labs, research institutions, and deployment teams running mixed fleets of Unitree quadrupeds.
Usage Guidelines & Best Practices
To maximize battery life and ensure safe operation with the higher-power Fast Charger, follow these best practices:
- Cool Before Charging — Do not charge the battery immediately after heavy use. Wait for the battery to cool to near room temperature before connecting the charger. Charging a hot battery significantly reduces cell lifespan.
- Ideal Temperature Range — Charge in an environment between 5°C and 40°C for optimal battery health and charging efficiency.
- Well-Ventilated Area — The Fast Charger generates more heat than the Standard Charger. Place the charger and battery on a hard, non-flammable surface with generous airflow around the unit. Never charge inside enclosed bags or cases.
- Supervised Charging — It is recommended to charge within sight, especially during the first few charge cycles with a new battery or when using the Fast Charger for the first time.
- Disconnect When Full — Although the charger has automatic shutoff, it is good practice to disconnect the battery from the charger once charging is complete.
- Use Only Official Chargers — Third-party chargers may not provide the correct voltage regulation or safety protections. Unitree does not warrant batteries damaged by non-official chargers.
Technical Specifications
| Parameter | Unitree Fast Charger |
| Product Dimensions | 190 mm × 11 mm × 45.2 mm |
| Input Voltage | AC 100 V – 240 V~ |
| Input Frequency | 50 / 60 Hz |
| Max Input Current | 6.0 A |
| Output Voltage | DC 50.4 V |
| Output Current | 7.4 A |
| Output Power | 373 W |
| Standard Battery Charge Time | Approximately 1.5 hours |
| Long-Life Battery Charge Time | Approximately 2.5 hours |
| Compatible Models | Unitree A2, Unitree A2-W, Unitree As2-W (batteries are interchangeable) |
| Safety Protections | Overcharge, short circuit, over-temperature, over-current, over-voltage, automatic shutoff |
| Warranty | 12 months |
Charger Comparison
Choose the charger that matches your operational needs:
| Feature | Standard Charger | Fast Charger |
|---|---|---|
| Output | 50.4 V, 4.0 A, 201 W | 50.4 V, 7.4 A, 373 W |
| Standard Battery | ~2.5 hours | ~1.5 hours |
| Long-Life Battery | ~4 hours | ~2.5 hours |
| Compatible Models | A2 series | A2 series |
| Best For | Overnight charging, labs, gentle charge profile | Rapid turnaround, competitions, field ops |
| Dimensions | 190 × 11 × 45.2 mm | 190 × 11 × 45.2 mm |
* Specifications are based on manufacturer data and may vary slightly by production batch.
* The A2, A2-W and As2-W batteries are interchangeable — this charger works with all three platforms.
* Charge times are approximate and depend on ambient temperature, battery condition, and starting charge level.
* Always use official Unitree chargers. Third-party chargers may void warranty and damage the battery.
* Unitree is a registered trademark of Unitree Robotics.
Unitree
by
Unitree
Unitree Battery FAST Charger for A2 series
SKU:
As2-CHARGER-FAST
- Regular price
- $230.00
- Sale price
- $230.00
- Regular price
-
- Unit price
- per
Shipping calculated at checkout.
Providing the best new Tech Experience, Energy Independence and Robotics Ways of Optimisation
Providing the best new Tech Experience, Energy Independence and Robotics Ways of Optimisation
Packaging note:
Equipment is being supplied in a manufacturer packaging
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