Votronic 3350 VCC 1212-25 IUoU-Li 12V 25A B2B charger

The VCC 1212-25 IUoU-Li from Votronic (3350) 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) and from the alternator (starter battery) while driving. The device also ensures a complete IU1oU2 charging characteristic during driving. The maximum charging current of the VCC is 25A and it can work with lead-acid, gel, AGM1, AGM2, and LiFePO4 batteries.

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 6, 6 + plus vehicles. It also has a connection for a battery temperature sensor (included in delivery). Compared to the previous model (3306), the charge converter now has larger connection terminals.

overview of the Votronic 3350 VCC 1212-25 IUoU-Li

• B2B charger
• Galvanic isolation
• Fully automatic operation
• Automatic, adjustable power control
• Increases or decreases the voltage
• Compensates for line losses and voltage fluctuations
• Significantly improved energy balance
• Charging cable compensation
• Heavily dimensioned power components
• Compact design

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 considerable amounts of current to be charged into the battery in a short time. Long charging cables and losses are neatly compensated for, 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 charge a second battery easily without installing a second alternator.

Universally applicable all-rounder

For on-board batteries in classic lead-acid, lead-gel, or lead-AGM technology, as well as modern lithium LiFePO4 technology, the 8 selectable charging programs ensure monitoring-free, fast, and gentle full charging from any state of charge, followed by full maintenance and carecan be selected to 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.

Fully automatic operation: The device is permanently 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: During simultaneous consumption, the battery continues to be charged or remains fully charged. The device automatically calculates and monitors the charging times.
Built-in vehicle electrical system filter: Problem-free parallel operation with other charging sources (EBL, chargers, engine and fuel generators, solar systems) on one battery.

monitoring and protection

• against overload
• against overheating
• against overvoltage
• short circuit
• from malfunction and battery reverse discharge through electronic regulation
• complete separation of device and battery
• LiFePO4 temperature monitoring
• Lead temperature compensation

Technical data

• Input IN Starterbattery
  • Nominal battery voltage: 12 V
  • Recommended battery capacity, min.: 60 Ah
  • Max. power consumption: 480 W
  • Max. current consumption (at lowest input voltage): 37 A
  • Current consumption in standby mode: 0.07 A
  • Current consumption OFF: 0.0004 A
  • overvoltage shutdown: 16.50 V
• Output OUT On-boardbattery
  • Nominal battery voltage: 12-13.3 V
  • Recommended/maximum battery capacity: 50-170/220 Ah
  • Charging current Main charge, 1-phase, 8 V to U1, 0-15 h: 25 A
  • Charging/buffer/load current, regulated U1-U2 phase: 0-25 A
  • Selectable charging programs: 4
  • Charging voltage limit: 15 V
• General
  • Temperature range: -20°C to +45°C
  • Protection class: IP2X
  • Weight: 1.35 kg
  • Dimensions (including mounting): 280 x 139 x 74 mm

Scope of delivery:

1x Votronic 3306 VCC 1212-25 IUoU-Li battery-to-battery charging converter
1x operating instructions (German)
1x Temperature sensor 825