Victron Centaur 24V/3Bank Battery Charger

The Victron Centaur 24V Battery Charger is a professional-grade, three-bank automatic battery charger designed for marine, RV, and off-grid applications requiring simultaneous charging of up to three independent 24V battery banks. Available in four output current ratings — 16A, 30A, 40A, and 60A — all models feature a three-stage Bulk/Absorption/Float charging algorithm, universal AC and DC input, and three fully isolated outputs each capable of delivering the full rated charge current independently.

All Centaur 24V models operate without adjustment over a 90–265V AC input range at 50 or 60 Hz, and also accept a 90–400V DC supply — making each model a genuine worldwide product and a capable DC-DC charging converter in diesel-electric and hybrid generator systems. Unlike many chargers that claim universal input but reduce output power at the extremes of the range, the Centaur maintains full output current throughout its entire specified input voltage range.

The three isolated DC outputs allow each 24V battery bank to be charged at the full rated current independently — a key distinction from chargers that split the total current across outputs. Each output uses a common negative rail but independent positive terminals, with any single output capable of supplying 100% of the rated charge current when only one battery is connected. A DIP switch on the PCB selects the appropriate absorption and float voltages for Flooded Lead-Acid, GEL, or AGM battery chemistry — with the charger defaulting to GEL settings from the factory.

Temperature compensation is provided by an internal sensor, adjusting charge voltage at −2 mV/°C per cell to correct for ambient temperature changes during the charge cycle. The aluminium, epoxy powder-coated enclosure with drip shield and stainless steel fixings is designed to withstand the heat, humidity, and salt air of marine environments, with circuit boards acrylic coated for maximum corrosion resistance. CE and UL certified, the Centaur is suitable for both European and North American installations.

Features

Three Fully Isolated Outputs — Each Capable of Full Rated Current

Three isolated DC outputs charge up to three separate 24V battery banks simultaneously. Each output is capable of supplying the full rated charge current independently — so a 40A Centaur can deliver all 40A to a single battery bank if only one bank is connected, rather than dividing the current equally across outputs.

Universal AC and DC Input — Worldwide Operation

All models accept 90–265V AC at 45–65 Hz without any adjustment or switching — maintaining full output power throughout the entire input range. The charger also accepts 90–400V DC input, making it suitable as a DC-DC charging converter in diesel-electric systems and hybrid generator installations.

Three-Stage Bulk / Absorption / Float Charging

The fully automatic three-stage charging algorithm charges at maximum bulk current until output reduces to 70% of rated current, then initiates a four-hour timed absorption phase before switching to float. The charger can remain connected indefinitely in float mode without risk of overcharging or excessive gassing.

DIP Switch Battery Type Selection — Flooded, GEL, AGM

A DIP switch on the PCB selects the optimum absorption and float voltages for Flooded Lead-Acid, GEL, or AGM batteries — with individual absorption voltages of 29.0V (LA), 28.7V (AGM), 28.4V (GEL), and 29.4V (Other) — ensuring correct charging for any standard 24V lead-acid battery chemistry.

Temperature-Compensated Charging

An internal temperature sensor automatically adjusts charge voltage at −2 mV/°C per cell (−1 mV/°F per cell) throughout the charge cycle — compensating for ambient temperature changes and ensuring accurate absorption and float voltages in hot engine rooms and cold winter installations.

Aluminium Epoxy Powder-Coated Marine Enclosure

The aluminium enclosure with epoxy powder coating, drip shield, and stainless steel fixings is built to withstand the heat, humidity, and salt air exposure typical of marine installations. Circuit boards are acrylic coated for maximum corrosion resistance and long-term reliability in adverse environments.

CE and UL Certified — Global Compliance

All Centaur 24V models meet the requirements of both CE (European) and UL (United States) standards — making them suitable for installation on vessels and in vehicles for both European and North American markets without requiring separate regional variants.

Floor and Wall Mountable

Suitable for both floor and wall mounting, with vertical orientation recommended for optimum cooling. A wall mounting bracket is included. Maximum battery cable length is 6 metres, with minimum cable cross-sections specified per model in the installation manual.

Specifications

Datasheets and Manuals

Datasheet

Product Manual