Charging Converter VCC 1212-45 Li

Article-No. 3307





VCC 1212 45 Li 3307

Battery-to-Battery (B2B)
Charging Technology


Starter Battery   Supply Battery



  • High charging capacity, already within short distances
  • Significantly improved energy balance of the supply circuit
  • Outstanding protection of the supply battery and the connected consumers against sometimes very strong voltage fluctuations of dynamically controlled dynamos of newer vehicles
  • During longer distances, the IU1oU2oU3 charging technology achieves full charging and overcharging is reliably excluded
  • Optimised characteristic lines of charging adjustable for 4 battery types by battery selector switch (gel, lead acid/AGM1, AGM 2, LiFePO4)
  • Automatic, adjustable power control giving priority to charging of the starter battery by the dynamo in case of strong loaded vehicle mains to ensure that the vehicle can be started at any time
  • In case of simultaneous consumption during parallel and floating operation, charging of the battery is continued or trickle charging is effected. Calculation and control of the adaptation of the charging time is effected automatically by the charging converter
  • The integrated temperature compensation automatically ensures the individual adaptation of the charging voltage to the battery temperature independently of the dynamo and allows also charging beyond the recommended LiFePO4 battery temperatures below 5 °C and above 35 °C. Battery temperature sensor, Art.-No 2001, is included in the delivery scope
  • Simple installation, no interventions in the starter circuit required. The unit is switched into the charging cable to the supply battery
  • The connection of a Remote Control S, Art.-No. 2075, or Remote Indicator IP67, Art.-No. 2081, or Charger State Monitor IP67, Art.-No. 2082, plug-in type, is provided and can easily be realised
  • Also suitable for an operation with EBL (electroblock) and EVS (only VCC 1212-25 and VCC 1212-45 IUoU)
  • Integrated on-board mains suppression filter ensures unproblematic parallel operation of solar systems, mains chargers and other charging sources at one battery
  • Galvanic isolation between input and output ensures absolute separation of the battery circuits for outstanding suppression of failures, for neat ground ratio on both sides, also with long supply cables, safety in case of failure (puncture 12 V/24 V or 24 V/12 V is not possible) and reliably avoids undesirable back discharge of the battery circuits
  • Control input for fully automatic controlled operation (ignition, D+ motor running) or optionally manual control by remote switch
  • If required, the measuring input allows a pure voltage control of the unit
  • The application range of the unit also covers perfect battery charging in great distance of the dynamo in large vehicles, trailers, supply containers etc.

Technical Details

Input IN Starter Battery "II"  
Nominal Voltage Battery 12 V
Recomm. Battery Capacity min. 80 Ah
Power Consumption max. 720 W
Current Draw (at lowest input voltage) max. 63 A
Current Consumption during Stand-by 0.08 A
Current Consumption OFF (K1.15/D+ without Signal) < 3 mA
Overvoltage Disconnection EURO 6+ 16.50 V
Output OUT Board Battery "I"  
Nominal Voltage Battery 12.8 V - 13.2 V
Battery Capacity, recommended/up to 90-300/400 Ah
Charging Current Main Charging, Phase I, 8 V up to U1, 0-15 h 45 A
Charging/Floating/Load Current, controlled, Phase U1-U2 0 - 45 A
Selectable Charging Programs LiFePO4 4
Minimum Battery Voltage for Charging Start 0 V
Prelim. Charg. Current (deeply discharged battery) 22.5 A (0-8 V)
Reverse Current from Battery, OFF (K1.15/D+ without Signal) 0.000 A
Reset Voltage LiFePO4 (30 sec) 12.75 V
Limit of Charging Voltage (Consumer Protection) 15.00 V
External Overvoltage Disconnection (20 sec.) 15.20 V
Ripple Factor Voltage < 30 mV rms
Input for Battery I Temperature Sensor yes
Charging Timer 3-fold
Safety Protect. ag. Reverse Batt./Short Circuit/Back Discharge yes
Safety Timer per Charging Phase I /U1 yes
EBL START In, Measuring Input/Charging Port yes
Charging/Trickle Charging for Starter Battery 12V 0...3 A
Overcharge Protection yes
Safety Protect. ag. Reverse Batt./Short Circuit/Back Discharge yes
Fitting Position of Unit any
Temperature Range -20/+45° C
Speed-controlled, Temperature-controlled Fan yes
Gradual Reduction of Charging Capacity at Overtemperature yes
Safety Disconnection in Case of Overheating yes
System of Protection IP21
Weight 1700 g
Dimensions, incl. Mounting Flanges 245 x 160 x 71 mm
Ambient Conditions, Humidity of Air max. 95 % RH, no condensation
Delivery Scope: Operating Manual, Temperature Sensor  

Charging Programs

Li „LiFePO4“: Charging Program for Lithium Batteries, Characteristic Line IU1oU2
Charging program for lithium LiFePO4 batteries with completely integrated electronic system and safety circiut (BMS).


Anleitung Katalog


Fernbedienung S Ladegeraete 2075

Remote Control S (Art. 2075)

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