3.3kw on board charger
The core of high-efficiency power conversion for modern electric mobility. Our 3.3kW On-Board Charger (OBC) is a fully digital, air-cooled unit designed for the harshest automotive environments. Featuring IP67 protection and a wide input voltage range of 90-265VAC, this charger achieves ≥92% efficiency for electric passenger cars, logistics vehicles, and high-performance electric motorcycles.
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Rated Power: 3.3kW.
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Protection Level: IP67.
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Communication: CAN-BUS 2.0B Integration.
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Cooling: Advanced Air Cooling (Fan-cooled).
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Smart Features: Online upgrades and real-time fault diagnosis support.
Automotive Authority in Charging Technology
High-Efficiency Power Conversion
Efficiency is the ultimate metric for vehicle range and thermal health. This 3.3kW OBC delivers a peak efficiency of ≥92% at rated voltage. By utilizing a full digital software design, it optimizes the power factor and reduces harmonic distortion, ensuring your vehicle battery receives stable, clean energy from any global grid (90V to 265V AC).
Engineering Expertise & Safety Integrity
In the high-voltage EV environment, reliability is a result of redundant engineering. Our charger is built to withstand extreme conditions:
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Redundant Protection Design: Features software-level safety triggers for input/output under-voltage, over-temperature, over-current, and output short-circuit protection.
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Ruggedized for Extreme Environments: Rated at IP67, the unit is completely sealed against dust and water immersion. It operates reliably in ambient temperatures ranging from -40°C to +85°C.
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Smart System Synergy: Integrated CAN-BUS communication allows the charger to maintain a continuous handshake with the Battery Management System (BMS). This ensures precise voltage (±1%) and current (±3%) accuracy, protecting the chemical life of your battery pack.
Technical Specifications Table
| Item | Technical Specifications | Remarks |
| Rated Output Power | 3.3kW | |
| Input Voltage Range | 90-265VAC | |
| Output Voltage Range | 30-70VDC | |
| Max Output Current | 68A | |
| Efficiency | ≥92% | At rated voltage |
| Working Temperature | -40°C to +85°C | Inlet ambient temperature |
| Voltage/Current Accuracy | ±1% / ±3% | |
| Communication Method | CAN-BUS | |
| Static Current | ≤2mA | Consumption in sleep/shutdown |
| Wake-up Method | AC / 200mA Output | |
| Cooling Method | Air Cooling (Wind) |
🛠️ Expert Application & System Integration
Our 3.3kW OBC is designed for versatile mounting in specialized EV platforms:
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Electric Motorcycles: High-density power for premium e-bikes requiring fast turnaround.
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Low-Speed EVs (LSEV): Ideal for golf carts, utility vehicles, and sightseeing cars.
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Industrial AGVs: Reliable, automated charging for warehouse robotics and material handling equipment.
Frequently Asked Questions (FAQ)
Q: Does this charger support software customization?
A: Yes. The charger features a full digital software design that supports online upgrades and customized CAN protocol mapping for your specific VCU or BMS requirements.
Q: Is it safe for outdoor use in heavy rain?
A: Absolutely. With an IP67 protection rating, the internal electronics are fully sealed against water and dust, making it suitable for both indoor and outdoor vehicle mounting.
Q: How does the charger handle overheating?
A: The unit includes integrated over-temperature protection. It will automatically derate or shut down if the internal thermal thresholds are exceeded, resuming safely once conditions normalize.