CTS 3.3kW 6.6kW On Board Charger with CAN Bus for Electric Vehicle and EV Conversion System

The rapid growth of electric vehicles and EV conversion projects demands reliable, efficient, and intelligent on-board charging solutions. Whether you are building a custom EV from scratch, converting a classic car to electric, or upgrading an existing electric fleet — a high-performance charger with seamless communication is essential. CTS Battery brings years of power electronics expertise to deliver the CTS series on-board charger, designed for EVs, light commercial vehicles, and EV conversion systems.

Our on-board chargers are engineered to provide:

• Safe and stable charging for lithium (LiFePO₄, NMC) and lead-acid batteries
• Dual power options: 3.3kW and 6.6kW models for flexible installation
• CAN bus communication for real‑time data exchange with BMS and vehicle VCU
• Compact, rugged design suitable for passenger EVs, utility EVs, and DIY conversion projects
• Whether you need a charger for a production EV or a one‑off conversion, CTS delivers OEM-grade performance and reliability.

On‑road EVs and conversion projects face vibration, temperature changes, dust, and moisture. Our charger features an IP67-rated aluminum housing, automotive-grade connectors, and vibration‑resistant internal potting, ensuring long life in engine bays or underbody installations.

Choose the right charging speed for your battery pack and usage pattern. The 3.3kW model is ideal for smaller packs and overnight charging; the 6.6kW model cuts charging time in half for larger capacity batteries. Both models support universal AC input (90–265V, 45–65Hz).

Built‑in CAN bus (J1939 / custom protocol) enables:

• Real‑time voltage, current, and temperature monitoring
• Automatic start/stop based on BMS commands
• CC/CV multi‑stage charging profile
• Fault diagnosis and history logging
• Firmware update via CAN

We understand that every EV conversion and electric vehicle has unique requirements. Our charger offers:

• Output voltage ranges: 24V / 48V / 72V / 96V / 144V / 288V / 384V and custom
• Programmable charge algorithm for LiFePO₄, NMC, lead‑acid, etc.
• Active PFC (power factor correction) >0.99
• Efficiency up to 94%
• Optional LCD display and temperature sensor
• CAN / RS485 / optional analog control

Seamless Integration with Any EV System

The CTS on‑board charger works with leading BMS brands, VCUs, and battery packs. It supports both conduction charging (Type 1, Type 2, GB/T) and is perfect for both new electric vehicles and classic car EV conversions.

• Passenger Electric Vehicles (BEV, PHEV)
• Electric Light Commercial Vehicles (vans, trucks)
• Classic Car & Vintage EV Conversions
• Low-Speed Electric Vehicles (LSV, golf carts, neighbourhood EVs)
• Electric Forklifts and Industrial AGVs
• Fleet EV Charging Infrastructure (on‑board retrofit)
• Off‑grid EV Charging Stations

At CTS Battery, we don’t just supply chargers — we provide complete powertrain and charging solutions for electric vehicles and conversion projects. If you are building, converting, or upgrading any electric vehicle, choosing the right on‑board charger is critical. Send us your battery pack and vehicle requirements today — our engineering team will respond within 24 hours.