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 insulated battery charging converter for special vehicles, high-quality motorhomes and boats with galvanic insulation. The charging converter (booster) of the "vcc" series has been developed according to 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 curve while driving. The max. charging current of the vcc is 25a and can work with lead-acid, gel, agm1, agm2 and LiFePO4 batteries.

In contrast to conventional cut-off relays, the charging voltage is lowered or raised according to the charging program specification, making it particularly suitable for EURO standard 6, 6 + plus vehicles. It also has a connection for a battery temperature sensor (included in the scope of delivery). Compared to the previous model (3306), the charging converter now has larger connection terminals.

overview of the votronic 3350 vcc 1212-25 IUoU-Li

• b2b charger
• Galvanic insulation
• fully automatic operation
• Automatic, adjustable power control
• Increases or decreases the voltage
• Compensates for line losses and voltage fluctuations
• Significantly better energy balance
• Charging cable compensation
• Powerfully dimensioned power components
• Compact design

What added value does the use of a b2b charging converter offer me?

The charging converters ensure optimum and rapid charging of the supply battery from the alternator while driving. In contrast to a simple cut-off relay, the charging voltage is raised to the value required for the respective battery type for a full charge and demanded by the battery manufacturers. This means that the full charging current can flow and a considerable amount of current can be charged into the battery in a short time. Long charging cables and losses, as well as voltage fluctuations at the alternator, are properly compensated for. In the case of charging converters with different input and output voltages (12v/24v or 24v/12v), it is also possible to charge a second battery without installing a second alternator.

Universally applicable all-rounder

For on-board batteries in classic lead-acid, lead-gel or lead-AGM as well as modern lithium-LiFePO4 technology, the 8 selectable charging programs guarantee a monitoring-free, fast and gentle full charge from any state of charge with subsequent 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 with power, even if the on-board power supply is heavily loaded. The automatic power control ensures the necessary safety and starting ability 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: The battery continues to be charged or is kept full if there is simultaneous consumption. The device automatically calculates and monitors the adjustment of the charging times.
Built-in on-board filter: Problem-free parallel operation with other charging sources (ebl, chargers, motor and fuel generators, Solaranlagen) on one battery.

monitoring and protection

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

Technical data

• Input in starter battery
  • Rated battery voltage: 12 v
  • Battery capacity recommended, min.: 60 Ah
  • Max. Power consumption: 480 W
  • Max. Current consumption (at lowest input voltage): 37 A
  • Current consumption in standby: 0.07 A
  • Current consumption off: 0.0004 A
  • overvoltage switch-off: 16.50 v
• Output out on-board battery
  • Rated battery voltage: 12-13.3 v
  • Battery capacity recommended/up to: 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 - +45°C
  • Protection class: IP2X
  • Weight: 1.35 kg
  • Dimensions (incl. 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