When selecting an On-Board Charger (OBC) for your EV or energy storage project, one key question often arises:
👉 Should I choose a charger with CAN communication or a non-CAN version?
Let’s break down the difference, their applications, and how to choose the right one for your system.
🔹 1. What is a CAN Communication OBC?
CAN (Controller Area Network) is a communication protocol that allows different components in a system — like the Battery Management System (BMS), charger, and Vehicle Control Unit (VCU)** — to exchange real-time data safely and efficiently.
When your OBC supports CAN communication, it can:
- Receive charging commands and parameters directly from the BMS
- Adjust voltage, current, and charging curve dynamically
- Communicate charging status, errors, and temperature back to the system
- Enable smart charging and better battery protection
✅ Ideal for:
-
EVs with advanced BMS (e.g., automotive, e-bikes, AGVs, marine applications)
-
Projects requiring precise charge control or integrated monitoring
🔸 2. What is a Non-CAN OBC?
A non-CAN OBC (also called an analog or standalone charger) works independently — it charges the battery based on preset voltage and current values without communication to the BMS.
It’s plug-and-play, simple to use, and cost-effective.
However, it cannot automatically adjust to changes in battery condition or cell balancing status.
✅ Ideal for:
- Simpler battery systems or DIY energy storage setups
- Low-cost EV conversions or off-grid solar systems
- Applications where monitoring can be done manually or externally
⚙️ 3. Key Differences at a Glance
| Feature | CAN OBC | Non-CAN OBC |
|---|---|---|
| Communication | Real-time data exchange with BMS | No data exchange |
| Charging Control | Dynamic and adaptive | Fixed charging parameters |
| Safety | High — responds to BMS feedback | Basic — relies on preset limits |
| Integration | Suited for smart systems | Suited for simple setups |
| Cost | Slightly higher | More affordable |
🔍 4. How to Choose the Right OBC for Your Project
Ask yourself these key questions:
-
Do you have a BMS with CAN output?
→ If yes, choose a CAN-enabled OBC for best communication and safety. -
Is your system standalone or DIY-type?
→ A non-CAN charger may be sufficient. -
Do you need remote monitoring or system integration?
→ Go for CAN OBC to enable smart features. -
What’s your budget and production volume?
→ Non-CAN versions are more economical for smaller projects.
⚡ 5. Example: DeliGreen 3.3kW OBC Series
The DeliGreen 3.3kW OBC125K / 250K / 500K supports both CAN and non-CAN options, offering flexibility for:
- EVs, e-boats, golf carts, AGVs
- Energy storage and solar charging systems
Available in IP67 waterproof design, wide voltage range (90–265V AC), and fast delivery from EU warehouse.
👉 Learn more: Deligreen 3.3kW OBC
💬 Join the Discussion
Which one do you use in your projects — CAN or non-CAN?
What challenges or advantages have you experienced integrating them with your BMS?
#OBC #EVCharger #LiFePO4 #EnergyStorage #CANbus #BMSIntegration #EVTechnology #Deligreen #RenewableEnergy #SmartCharging #EVEngineering
