DUC Series 12V DC-DC Battery Charger 30A/40A/50A
The DUC Series DC-DC Battery Charger is designed to efficiently charge service batteries from vehicle alternators while protecting battery health and maximizing charging performance. With advanced MPPT-inspired charging algorithms and multi-stage charging control, the DUC Series ensures safe and reliable charging for both lithium and lead-acid battery systems. Whether installed in RVs, camper vans, boats, commercial vehicles, or off-grid energy systems, the DUC charger delivers stable power conversion and intelligent battery management.
- 2-year warranty
- Worldwide support
- Certified & compliant

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1
Ships from EU warehouse - typically 3–5 business days
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Specifications
- Rated Voltage
- 12V-12V
- Input Voltage Range
- 9-17V
- Maximum Input Voltage
- 17V
- Output Charging Voltage Range
- 10-17V
- Input/output Current Range
- 1-30A
- Max. Output Power
- 420W
- Max. Efficiency
- ≥98.3%
- Standby Current Losses
- 10mA
- Commnunication Method
- CAN(RV-C Protocol)/RS485 (5VDC/300mA)
- Operating Temperature
- -20°C to +60°C (>40℃ derating)
- Altitude
- 2000m
- Relative Humidity
- ≤ 95% (N.C.)
- Ingress Protection
- IP32
- Dimensions (l × W × H) (mm)
- 189mm x 181mm x 64.5mm
- Weight
- 1.08kg
Highlights
- Multiple operating modes for different application scenarios
- Generator start-stop detection logic for enhanced generator energy efficiency
- Supporting multiple generator types, including smart/Euro 6 generators
- Conversion efficiency up to 98.1%
- Multi-stage charging curve algorithm
- House battery supports various battery types, including lithium batteries
- Stable self-activation for lithium batteries
- eDuallimits for input and output power, and current
- Protection level IP32 Natural cooling for heat dissipation, and low-noise operation
- RS485/CAN communication
- Comprehensive electronic protections
- Energy statistics
- Compliant withlEC62477-1, EMC, and other relevant standards
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