Votronic 3343 VCC 1224-25 IUoU 12V to 24V 25A B2B charger

The VCC 1224-25 IUoU from Votronic (MPN 3343) is a fully automatic, galvanically isolated battery charging converter for special vehicles, high-quality motorhomes, and boats with galvanic isolation. The charging converter (booster) of the "VCC" series has been developed in accordance with the latest specifications for the mobile charging of supply batteries (living area/on-board batteries) from the alternator (starter battery) while driving. The device ensures a complete IU1oU2 charging characteristic even while driving. The maximum charging current of the VCC 1224-25 is 25A and it can work with lead-acid, gel, AGM1, and AGM2 batteries. This device charges a 24V battery from a 12V battery/alternator.

In contrast to conventional isolating relays, the charging voltage is lowered or raised according to the charging program specification, making it particularly well suited for EURO standard 6, 6 + plus vehicles.

Universally applicable all-rounder

For on-board batteries in classic lead-acid, lead-gel, or lead-AGM technology, the selectable charging programs ensure monitoring-free, fast, and gentle full charging from any state of charge, followed by full maintenance and care of the battery. Even on short journeys, the battery is charged with full charging current. Connected 12 V consumers are automatically supplied, even when the on-board network is heavily loaded. Automatic power control ensures the necessary safety and starting capability of the vehicle.

Important features of the Votronic 3343 VCC 1224-25 IUoU

• The VCC 1224-25 is a B2B charger with galvanic isolation for charging 24V batteries from a 12V alternator/battery.
• Max. charging current: 25A, input voltage range 12V, charges 24V batteries, recommended battery capacity: 50 - 220 Ah
• Increases or decreases the voltage to the level required to precisely charge the on-board battery with the optimum charging characteristic curve.
• It completely compensates for line losses and voltage fluctuations in the alternator, such as those that occur constantly and to a considerable extent in Euro 6 vehicles (intelligent alternators).
• Features a compact design, low weight (high-frequency switch mode technology), and powerful performance components for safe operation.
• Significantly improved energy balance of the on-board battery. No interference with the starter circuit; the device behaves like a powerful consumer on the alternator.
• The 24V consumers supplied are protected against overvoltage and voltage fluctuations.
• The charging voltage is free of peaks and regulated in such a way that overcharging of the batteries is impossible.
• Fully automatic operation: The device is constantly connected to the batteries and is automatically activated by the vehicle's running alternator. The batteries are not discharged when the engine is not running.
• Parallel and buffer operation: When power is being consumed, the battery continues to be charged or remains fully charged. The device automatically calculates and monitors the charging times.
• Monitoring-free charging: Multiple protection against overload, overheating, overvoltage, short circuit, malfunction, and battery discharge through electronic regulation, up to complete disconnection of the device and battery.
• Built-in vehicle electrical system filter: Problem-free parallel operation with other charging sources (EBL, chargers, motor and fuel generators, solar systems) on one battery.
• Charging cable compensation: Voltage losses on the charging cables are automatically compensated.
• Connection for battery temperature sensor (sensor included in delivery).
• For lead-acid batteries (acid, gel, AGM), the charging voltage is automatically adjusted to the battery temperature. This results in better full charging of weaker batteries in cold weather and prevents unnecessary battery gassing in summer temperatures.

What added value does using a B2B charging converter offer me?

The charging converters ensure optimal and fast charging of the supply battery from the alternator while driving. In contrast to a simple isolating relay, the charging voltage is raised to the value required for a full charge for the respective battery type and specified by the battery manufacturers. This allows the full charging current to flow and charge the battery with considerable amounts of current in a short time. Long charging cables and losses are neatly regulated, as are voltage fluctuations at the alternator. With charging converters with different input and output voltages (12V/24V or 24V/12V), it is possible to easily charge a second battery without installing a second alternator.

Scope of delivery:

1x Votronic 3343 VCC 1224-25 IUoU 25A charging converter
1x operating instructions (German)
1x Temperature sensor