Turbo Diesel Range Extender 20kW BG-RES-20TD

The Turbo Diesel Range Extender 20kW is the flagship turbocharged diesel unit in the mid-range category, offering an exceptional combination of power density and fuel economy. With a rated output of 20 kW and a peak capability of 25 kW at 525 Vdc, coupled with an industry-leading fuel consumption of just 0.30 L/kW·h, this system is purpose-built for commercial EV operators who prioritize total cost of ownership and range reliability.

The turbocharged in-line 3-cylinder 1.2L EU-IV diesel engine ensures strong low-end torque and consistent power delivery across varying load conditions, making it particularly well suited for light commercial delivery vehicles, refrigerated vans, and specialty municipal EVs. The two generator control modes — constant voltage and constant power with load following — enable highly responsive energy management that adapts in real time to the vehicle’s demand profile.

Power battery protection is a standard feature: when battery SOC falls below 5% or ambient temperature drops below -20°C, the system automatically switches to load-following mode, reducing battery stress and preserving pack longevity. GPRS remote calibration and monitoring (optional) allows fleet managers to track performance metrics and receive diagnostic alerts without on-site intervention.

Compared to its gasoline counterpart, the Gasoline Range Extender 20kW, this unit delivers 25% better fuel efficiency, making it the preferred choice for high-utilization fleets. For higher power requirements, the Gasoline Range Extender 35–45kW provides a clear upgrade path, while the Heavy-Duty Diesel Range Extender 75kW serves the most demanding heavy commercial applications.