LR-L3W5-20K 20KW On-Board Charger for Commercial Electric Vehicles

High-Power Charging Built for Demanding EV Applications

As electric commercial vehicles continue to evolve toward higher voltage platforms and faster charging requirements, vehicle manufacturers need a charging solution that delivers power, reliability, and flexibility.

The LONGRUN LR-L3W5-20K is a 20KW air-cooled on-board charger designed for heavy-duty electric vehicles, including buses, trucks, construction machinery, mining equipment, and marine vessels. With support for battery systems from 80V to 850V, it provides a universal charging platform for a wide range of electric mobility applications.

Engineered with advanced digital control technology, intelligent CAN communication, and IP67 protection, the LR-L3W5-20K ensures stable charging performance in even the most challenging environments.

Faster Charging. Higher Uptime.

Downtime means lost productivity.

With a powerful 20KW output, the LR-L3W5-20K significantly shortens charging time compared with traditional 3.3KW, 6.6KW, or 11KW onboard chargers.

For fleet operators, logistics companies, and industrial equipment manufacturers, faster charging means:

• More operating hours

• Higher vehicle availability

• Improved fleet efficiency

• Reduced charging bottlenecks

One Charger Platform for Multiple Battery Systems

Vehicle manufacturers often develop products across different voltage architectures.

The LR-L3W5-20K supports output voltages from 80VDC to 850VDC, making it suitable for:

• 96V battery systems

• 144V battery systems

• 360V battery systems

• 540V battery systems

• 700V battery systems

• 800V high-voltage platforms

This flexibility helps OEMs simplify development while reducing integration costs.

Designed for Harsh Operating Environments

Commercial electric vehicles frequently operate in demanding conditions.

The LR-L3W5-20K features:

• IP67 waterproof and dustproof protection

• Corrosion-resistant aluminum housing

• Vibration-resistant structure

• Wide operating temperature range from -40°C to +65°C

Whether installed on a truck, bus, mining vehicle, or marine vessel, the charger delivers dependable performance year-round.

Intelligent CAN Communication

The charger communicates seamlessly with:

• Battery Management Systems (BMS)

• Vehicle Control Units (VCU)

• Fleet management systems

• Diagnostic and monitoring platforms

Through CAN Bus communication, charging parameters can be monitored and adjusted in real time, improving safety and charging efficiency.

High Efficiency for Lower Energy Loss

The LR-L3W5-20K achieves efficiency up to 94% and power factor above 0.99.

Benefits include:

• Reduced energy consumption

• Lower heat generation

• Improved battery charging performance

• Lower operating costs

This makes the charger ideal for commercial fleets where efficiency directly impacts profitability.

Comprehensive Safety Protection

Safety is critical in high-voltage charging systems.

The LR-L3W5-20K incorporates multiple protection functions:

• Input over-voltage protection

• Input under-voltage protection

• Output over-voltage protection

• Output over-current protection

• Short-circuit protection

• Reverse polarity protection

• Over-temperature protection

These features help protect both the charger and the battery system during operation.