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Victron Buck-Boost DC-DC Converter 50A is an advanced solution designed for the efficient and safe charging of 12V or 24V service batteries in modern vehicles. It is specifically engineered for integration into systems with smart alternators compliant with Euro 5 and Euro 6 standards. The device reliably protects the auxiliary battery from voltage spikes (e.g., up to 15.4V in Mercedes vehicles) and deep discharge, ensuring the stable operation of the entire power system.
In modern vehicles, alternator output is controlled by the Engine Control Unit (ECU) and often tied to regenerative braking systems, causing the voltage to fluctuate constantly and preventing the secondary battery from charging properly. The Buck-Boost converter resolves this issue by stabilizing the charging parameters at a predefined level, regardless of input conditions.
Key Applications:
- Modern vehicles equipped with smart alternators and Start-Stop technology.
- Motorhomes, campervans, commercial vehicles, and specialized machinery.
- Dual-battery configurations (separated starter and auxiliary/service battery banks).
- Direct alternator charging for LiFePO₄, AGM, and GEL batteries.
Technical Specifications (50A Model):
- Current Type: DC, fully programmable.
- Input Voltage Range: 10–30 VDC.
- Output Voltage Range: 10–30 VDC (software-adjustable).
- Maximum Charge Current: 50A (for 12V systems) or 25A (for 24V systems).
- Maximum Input Voltage: 30 VDC.
- Standby Power Consumption: only 7 mA.
- Dimensions: 213 x 120 x 30 mm.
- Weight: 1.4 kg.
- Operating Temperature Range: -25°C to +60°C.
Intelligent Protection and Control:
- Automatic Engine Run Detection — prevents accidental discharge of the starter battery when the engine is off.
- Flexible Activation Channels: supports D+, CAN-bus, or +15V ignition signals.
- Dual-sided Current Limiting: manages both input and output current parameters for maximum safety.
- Comprehensive Protection: automatic shutdown in case of overheating or low input voltage.
LED Status Indicators:
IN (Input) Indicator:
- 🟢 Green — device is active and operating normally.
- 🟡 Yellow — input voltage is too low; operation is suspended.
- 🔴 Red — system overheating; protective shutdown triggered.
- 🔵 Blue (fast flashing) — engine start detected; start-up delay timer active.
- 🔵 Blue (slow flashing) — insufficient voltage; start-up blocked by automation.
OUT (Output) Indicator:
- 🟢 Green — battery is fully charged; float/maintenance mode.
- 🟡 Yellow — battery is partially discharged.
- 🔴 Red — battery not detected or completely discharged.
- 🟣 Purple — active charging process.
Flexible Configuration and Programming:
The converter features fully customizable logic via proprietary Victron Energy software. Users can easily configure:
- Precise output voltage levels tailored to specific battery chemistries.
- Input and output current thresholds to protect onboard wiring.
- Automatic activation rules and triggers.
A standard USB Type A–B cable (purchased separately) is required to sync the device with a PC.
Key Advantages of the Victron Buck-Boost 50A:
- Absolute Versatility: fully compatible with AGM, GEL, and LiFePO₄ battery types.
- High Stability: flawless operation even during sudden voltage drops in the vehicle's electrical network.
- Ergonomic Design: compact footprint and lightweight construction for easy installation in tight spaces.
- Passive Cooling: fanless design ensures completely silent operation and eliminates dust build-up risks.