The Victron Centaur battery charger is a robust, high-output AC charger for 12V or 24V lead-acid battery systems. It suits caravans, motorhomes, boats and off-grid installations that need reliable charging from shore power, mains power or a compatible generator. Three isolated outputs let one charger serve up to three battery banks, while the wide 90–265VAC input range helps it cope with varying power supplies.
Select from eleven models covering 16A to 100A. Each output can deliver the model's full rated current, but the rated current is shared across the charger rather than multiplied by three. Match the charger to your battery voltage, bank capacity and expected DC loads.
Choose the right Centaur charger
| Model | System voltage | Charge current | Recommended battery capacity |
|---|---|---|---|
| Centaur 12/20 | 12V | 20A | 80–200Ah |
| Centaur 12/30 | 12V | 30A | 120–300Ah |
| Centaur 12/40 | 12V | 40A | 160–400Ah |
| Centaur 12/50 | 12V | 50A | 200–500Ah |
| Centaur 12/60 | 12V | 60A | 240–600Ah |
| Centaur 12/80 | 12V | 80A | 320–800Ah |
| Centaur 12/100 | 12V | 100A | 400–1000Ah |
| Centaur 24/16 | 24V | 16A | 45–150Ah |
| Centaur 24/30 | 24V | 30A | 120–300Ah |
| Centaur 24/40 | 24V | 40A | 160–400Ah |
| Centaur 24/60 | 24V | 60A | 240–600Ah |
Victron's recommended capacities are a practical selection guide. Confirm the correct charging current with your battery manufacturer's limits, existing loads and required recharge time.
Why choose the Victron Centaur?
- Three isolated battery outputs: charge up to three lead-acid battery banks from one unit.
- Universal power input: operates from 90–265VAC at 45–65Hz and also accepts 90–400VDC.
- Three-stage IUoU charging: automatically moves through bulk, absorption and float stages.
- Selectable lead-acid profiles: internal DIP switches provide settings for flooded, Gel and AGM batteries.
- Temperature-compensated charging: internal sensing adjusts charge voltage by -2mV per °C per cell.
- Clear current indication: a front-panel ammeter shows total charger output.
- Built for demanding installations: ignition protection, an aluminium enclosure and corrosion-resistant treatment support marine and mobile applications.
- Automatic protection: output short-circuit and over-temperature protection are built in.
Charging performance and installation
The Centaur delivers its rated output across the specified universal AC input range. Temperature-controlled forced-air cooling helps manage high output. Full rated current is available to 40°C, with approximate output derating to 80% at 50°C and 60% at 60°C. The operating range is -20°C to 60°C.
This is an IP20 charger, so install it upright in a dry, protected and well-ventilated location. It is not suitable for direct weather exposure. Allow clearance for airflow and remember that the cooling fan can be heard when the charger is working hard.
Correct DC cable sizing, over-current protection, battery isolation and earthing are essential at these current levels. Enclosure size, terminal size and mounting details vary by model, so check the latest Victron installation drawing for your selected part number before planning the space. High-current DC work and any fixed AC connection should be completed by a suitably qualified installer.
Centaur charger FAQs
Which Centaur model do I need?
Start with your battery bank voltage, then compare the bank's usable capacity and permitted charge current with the table above. Allow for DC loads that will run while charging. If you are unsure, share your battery details and typical loads with our team before ordering.
Can it charge three batteries at once?
Yes. The Centaur has three isolated outputs for up to three battery banks. The selected model's rated current is the charger's total available output, distributed according to battery demand. It is not three times the stated current.
Is the Centaur suitable for lithium batteries?
The documented DIP-switch profiles are for flooded lead-acid, Gel and AGM batteries. A dedicated lithium profile is not documented for this range. Do not assume compatibility with lithium batteries. Choose a lithium-capable charger unless your battery or system supplier has explicitly approved the Centaur settings.
Will it work with New Zealand mains power or a generator?
Yes. Its 90–265VAC, 45–65Hz input range includes New Zealand 230V mains power and can accommodate many generator supplies. The generator still needs to provide stable power within the charger's input specification and enough capacity for the chosen model.
Can it be mounted outdoors?
No. The IP20 rating means it needs a dry, protected installation space with adequate ventilation.
Does it replace a battery isolator or system protection?
No. The charger does not replace correctly sized cabling, fuses, isolation devices or other system protection. These must be designed for the installation.
Victron Centaur support in Auckland and across NZ
Select Caravans supplies Victron Centaur battery chargers from Auckland for caravan, motorhome, marine and off-grid power systems throughout New Zealand. Choose your battery voltage and charge current above, or contact us with your battery bank details if you need help selecting the right model.
