Photonic Universe is an official distributor of products from Victron Energy - the globally renowned manufacturer of high quality hybrid power electronics. Victron Energy chargers have a longstanding reputation for their outstanding reliability, innovative design and superior build quality.

Function:

This intelligent battery charger is designed to automatically charge one 12V battery / battery bank from another 12V battery / battery bank with its own energy source. For example, if one 12V battery / bank is being regularly charged by solar / mains/ alternator, this 50A DC-to-DC battery charger can pull energy from this battery bank to charge a second 12V target battery or battery bank. The target battery / bank will be charged at a maximum of 50A, using an intelligent multi-stage approach with full overcharge protection.

This compact and super lightweight battery to battery charger can be easily integrated or retrofitted into any 12V 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 XS charger can also operate in a DC conversion mode, where the output power 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: inbuilt Bluetooth feature allows the charging process to be monitored and settings to be changed at any time using the  VictronConnect App, without having to access the installation location.

• Safe unattended charging: the unit features inbuilt safety functions (protection against overload, overheating, overvoltage, short circuit, and reverse discharge of the battery), which allow the charger to be left permanently connected to the source battery for unattended automatic charging.

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

• Compatible with other charging sources: thanks to the inbuilt suppression filter, the batteries may be charged from alternative power sources, for example solar panels / petrol generators etc., whilst remaining connected to the battery charger.

• Remote on/off control: using a hard-wired switch, external relay control or 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.

• DVCC Control and Monitoring: the charger can be DVCC controlled via a GX device when connected through the VE.Direct port and switched to charger mode. This setup allows automatic adjustment of charging currents and voltages, bypassing internal charging algorithms. Charging/discharging is automatically regulated based on cell voltage and temperature. As well as this, it can be monitored and controlled both locally through a GX device and remotely via the VRM Portal, with predefined and customisable widgets available for easy access.

• Vehicle battery optimisation: specifically designed with efficient vehicle battery charging in mind. Unlike other chargers (or split charge relays) which do not instantly charge the battery at full current whilst driving and do not provide overcharge protection, this unit can automatically charge at full power, even during short journeys, with full protection from overcharging the target battery. This charger is also well suited to vehicles of Euro 6 emission standard and above, as it prevents the reduced or intermittent charging associated with smart alternators in these vehicles.

• Customisable input and output current: the Victron Connect app enables adjustments to both the input and output current in 0.1A increments, ranging from 1A up to the full 50A, providing greater control through the user-defined settings.

• System upgrade potential: this 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.

• Advanced temperature protection and compensation: the charger measures the ambient temperature at the start of the charging phase and compensates for the temperature during charging. The temperature is measured again when the battery charger is in low current mode during absorption or storage. Special settings for a cold or warm environment are therefore not required. For Lithium batteries, the charger prevents charging when at low temperatures to prevent damage to the battery.

• Input voltage lock-out: the charger can be shut down when the input voltage from the source falls below the defined lock-out value and will restart when the input voltage rises above the defined restart value. These values can be set using the Victron Connect app and provide protection against over-discharge of the source battery.

Additional features:

This charger also features LED indicators to show target battery charging stage and Bluetooth connectivity status.

Compatibility:

This DC-to-DC battery charger is suitable for use with any 12V lead acid or lithium batteries. It is not compatible with 24V batteries or a combination of 12V and 24V batteries.

Click on the 'Details and Specifications' tab for more information about this product.

Specifications:

• Input voltage: 9-17V
• Output current: 1-50A
• Battery types: suitable for any type of 12V lead acid or lithium battery
• Output voltage adjustable range: 10-17V
• Output voltage tolerance: +/- 0.25% (max)
• Output noise: 2mV RMS
• Max. power consumption: 700W
• No load consumption: < 100mA
• Standby consumption: < 1.5mA
• Temperature range: -20 to +60 C 
• Ambient conditions, humidity: max. 95% RH, no condensation
• Max cable cross section: 21.2mm² (4AWG)
• Protection: IP65 (splash and dust proof)
• Dimensions: 137.3 x 123.1 x 40 mm
• Weight: 0.33kg

This product is covered by a 5 year manufacturer warranty. For more information please refer to our Terms and Conditions.

Full details explaining wiring and operations can be found in the user manual supplied with this product (see Documents tab).

If you need help with installation or have any technical questions we can provide FREE support - please contact us by email or phone (see Contact Us page for more information).

The following documents are available to download:

User manual for 50A 12V DC to DC battery charger (VOS1212-50XS)

Datasheet for 50A 12V DC to DC battery charger (VOS1212-50XS)