Victron Buck-Boost DC-DC converter 25A charging booster/charging converter

Efficient battery charging with the Victron Buck-Boost DC-DC converter 25A charge booster/charge converter for vehicles with an intelligent alternator

The Victron Buck-Boost DC-DC converter 25A charge booster/charge converter is your solution for charging a 12 V or 24 V battery in vehicles with an intelligent alternator (alternator-based engine braking, Euro 5 and Euro 6 engines). This converter charges your auxiliary battery with a preset charging voltage and eliminates both high (e.g. Mercedes: 15.4 V) and low voltages.

Intelligent engine detection

Prevent your starter battery from discharging deeply with the built-in system that detects when the engine is running. Alternatively, you can also activate the converter via a programmable input (D+, CAN-Bus* or (+)15 connection).

Fully programmable

Use the user-friendly PC application to fully program the converter according to your needs. For this, you only need a USB Type A to USB Type B cable.

Flexibility for 12 V and 24 V systems

The Victron Buck-Boost DC-DC converter is designed to charge both 12 V and 24 V auxiliary batteries via a 12 V or 24 V alternator or a starter battery.

Adjustable charging current and input current limiting

The output current is determined by the maximum charging current, the maximum input current and the limiting of the converter's maximum operating temperature.

Practical status indicators

With the LED status indicators you always have an overview:

Input (LED):

• Green: Converter is on
• Yellow: Input voltage below the threshold, converter off
• Red: Over-temperature, converter off
• Blue, flashing quickly: Engine is running, converter switches on after the set delay
• Blue, flashing slowly: Low voltage at the input, converter off

Output (LED):

• Green: Converter off, battery voltage normal
• Yellow: Converter off, battery voltage low
• Red: Converter off, battery empty or not connected
• Purple: Converter on