Victron 20a 24v Dc To 12v Dc Automatic Multi-Stage Intelligent Battery-To-Battery Charger - 4Boats

Victron 20a 24v Dc To 12v Dc Automatic Multi-Stage Intelligent Battery-To-Battery Charger


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Regular price£196.99
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This intelligent battery charger is designed to automatically?ÿcharge one 12V battery /?ÿbattery bank from a 24V battery / battery?ÿbank?ÿwith its own energy source.?ÿFor example, if a 24V battery / bank is?ÿbeing regularly charged by solar / mains/ alternator, this 20A DC-to-DC battery charger can?ÿpull energy from this battery?ÿbank to charge a 12V target battery or battery bank. The target battery / bank?ÿwill be charged?ÿat a maximum of 20A, using an intelligent multi-stage approach with full overcharge protection.

This compact and lightweight battery to battery charger can be easily integrated or retrofitted into any system, allowing the user to transform a single battery system into a dual battery charging system. For example, in a vehicle or boat this charger can take energy from the engine starter battery (which is constantly topped up by the alternator) to charge a leisure or auxiliary battery / bank.

In a solar charging system, the charger allows easy conversion from a single battery solar charging kit to a dual battery charging kit, without the need to upgrade the single battery solar charge controller to a dual battery model. This is perfect for systems with a high solar input, where a suitable dual battery solar charge controller is expensive or difficult to procure.

The Orion Smart charger can also operate in a DC conversion mode, where the output voltage will be adjusted to a stable voltage with minimal electrical noise. This allows the running of sensitive DC equipment from a battery or other DC power source which may change voltage during charging or use.

Key features:

  • Bluetooth connectivity:?ÿinbuilt Bluetooth feature allows the charging process to be monitored and settings to be changed at any time using the ?ÿVictronConnect App,?ÿwithout having to access the installation location.

  • Safe unattended charging:?ÿthe unit features?ÿinbuilt safety functions (protection?ÿagainst overload, overheating, overvoltage, short circuit, and reverse discharge of the battery), which allow the charger?ÿto be?ÿleft permanently connected to the source battery?ÿfor unattended automatic charging.

  • Continued charging during battery/load use:?ÿthe charger will continue to operate at full power whilst energy is drawn from the battery during use.?ÿThe unit will maintain the charge if the battery is already at full capacity. Any 12V loads?ÿmay also be left permanently connected and running whilst the DC-to-DC charger is in operation,?ÿand will be protected against overvoltage and voltage fluctuations.

  • Compatible with other charging sources:?ÿthanks to the inbuilt suppression filter, the batteries may be charged?ÿfrom?ÿalternative power sources, for example?ÿsolar panels / petrol generators etc., whilst remaining connected to the battery charger.

  • Remote on/off control:?ÿusing a hard-wired switch, external relay control?ÿor the Victron Connect app, the charger can manually be turned on or off. This allows for greater control over when the charger activates, or automatic control by a Battery Management System.

  • Vehicle battery optimisation:?ÿspecifically designed with efficient vehicle battery charging in mind. Unlike?ÿother chargers (or split charge relays) which do not instantly charge the battery at full current whilst driving and do not?ÿprovide overcharge protection, this unit will automatically charge at full power, even during short journeys, with full protection?ÿfrom overcharging the target?ÿbattery.?ÿThis charger is also well suited to vehicles of Euro?ÿ6 emission standard and above, as?ÿit?ÿprevents the reduced or intermittent charging associated with smart alternators in these vehicles.

  • System upgrade potential:?ÿthis unit may be connected in parallel to an identical model in order to boost the charging capacity of the system. This is an ideal option for large battery systems, or those with powerful 12V appliances running directly from the batteries. A second unit may be added at any time for future system expansion.

Galvanic isolation:

The input, output and case are isolated from each other at up to?ÿ200Vdc, preventing any current leakage. This ensures that the two batteries function fully independently with no current passing between the two batteries?ÿor the ground apart from the charging current from the Orion battery charger. Current leakage can interfere with sensitive electronics, disturb dual battery systems with different potentials, or cause corrosion of metal boat hulls.

Additional features:

This charger also features?ÿLED indicators?ÿto show target battery charging stage and Bluetooth connectivity?ÿstatus.


This DC-to-DC battery charger is suitable for use with any?ÿ12V and 24V lead acid?ÿor?ÿlithium?ÿbatteries. It cannot be used to charge 24V batteries from a 12V or 24V battery bank.


  • Input?ÿvoltage: 16-35V
  • Output current: 0-20A
  • Battery types: suitable for any type of 24V / 12V lead acid?ÿor lithium battery
  • Under voltage shutdown: 14V
  • Under voltage restart: 15V
  • Output voltage adjustable range: 10-15V (12.2V nominal)
  • Output voltage tolerance: +/- 0.2V
  • Output noise: 2mV RMS
  • Max. power output (25 C): 280W
  • Max. power output (40 C): 240W
  • No load consumption: < 100mA
  • Standby consumption: < 1mA
  • Temperature range: -20 to +55 C?ÿ
  • Ambient conditions, humidity: max. 95% RH, no condensation
  • Max cable cross section: 16mm2?ÿ(AWG6)
  • Dimensions: 130 x 186 x 70 mm
  • Weight: 1.3kg?ÿ

This product is covered by a?ÿ5 year manufacturer warranty

The following documents are available to download:

User manual for 20A 24V DC to 12V DC Isolated battery charger (VOS2412-20I)

Datasheet?ÿfor 20A 24V DC to 12V DC Isolated battery charger (VOS2412-20I)

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