Votronic Battery Converter, B2B Charge Amplifier - VCC 1212-50

Input from the vehicle starter battery + IN Start
Vehicle Starter Battery Nominal Voltage	12 V
Min. Battery Capacity (Size), recommended	60 Ah
Input Voltage Range (EURO 6+), D+, controlled	10.5 - 16.5 V
Input Overvoltage Disconnection (EURO 6+), max.	16.5 V
Power Consumption max.	760 W
Current Draw (at lowest input voltage) max.	0.1 A - 68 A
Current Draw Limited, 3 Switch Positions IN Limit	49 A, 42 A, 33 A
Auxiliary Charging, Charge/Trickle Charg. 12V Starter Battery
for External Mains Charging Mode, Switch Position B	0 - 3 A
Activation Control Input D+ , from D+, Terminal 15, Ignition	8 - 16.5 V
IN Start Voltage Sensor Cables Vs- and Vs+	yes / yes
Terminal TR, Signal for Bypass Relay / max.	12V / 1A
Charging Port at the Board Supply Battery + OUT Board
Charging/Floating/Load Curr., controlled, IU1oU2, Lead, LiFePO	0 A - 50 A
Reduction at Switch Position OUT Limit	0 A - 39 A
Lead-Acid, Gel, AGM Batteries Nominal Voltage	12 V
Capacity (Battery Size), recommended / up to	75-320 / 440 Ah
Lead Charging Programs Stored in the Memory	4
Prelim. Charge. Current (Deeply Discharged Batt. <8 V) max.	25 A
Safety Charging Voltage at Battery Overtemperature	12.80 V
LiFePO4 Battery Nominal Voltage	12 V (12.8 -13.3 V)
Capacity (Battery Size), recommended / up to	75-320 / 440 Ah
LiFePO4 Charging Programs Stored in the Memory	4
Safety Charging Voltage at Battery Overtemperature	12.80 V
Input TT for Battery Temperature Sensor Board	yes
OUT Board Voltage Sensor Cables Vb- and Vb+	yes / yes
Quiescent Current, Standby	16 mA
Charging Timer	3-fold
Ripple Factor Voltage	< 30 mV rms
Limit of Charging Voltage +OUT Board (Consumer Protection)	15.00 V
External Overvoltage Disconnection +OUT Board (20 sec.)	15.50 V
Safety Protection against Short-circuit/Back Discharge	yes
Fitting Position of Unit	any
Temperature Range	-20 to 45° C
Speed-controlled, Temperature-controlled Fan	yes
Gradual Reduction of Charging Capacity at Overtemperature	yes
Safety Disconnection in Case of Overheating	yes
Dimensions, incl. Fastening Flanges and Terminals (LxWxH)	135 x 160 x 72 mm
Weight	950 g
Ambient Conditions, Humidity of Air: max. 95% RH, no condensation
Delivery Scope: Temperature Sensor, Manual

High charging capacity even for short distances or full charging for longer trips. It increases/decreases the voltage to the level needed to precisely charge the on-board battery with the optimal charging characteristic.

It fully compensates for line losses and alternator voltage fluctuations, as they occur to a considerable and continuous extent in Euro 6 vehicles (intelligent alternators).

Compact design, low weight (high-frequency switching technology) and large power components for safe operation.

Significantly improved energy balance of the on-board battery without interfering with the starter circuit. The supplied 12V consumers are protected against overvoltage and voltage fluctuations.

The charging voltage is peak-free and regulated in such a way as to make it impossible to overcharge the batteries.

Operation is fully automatic: the device is permanently connected to the batteries and is automatically activated by the vehicle's alternator. When the engine is not running, the batteries are not discharged.

Parallel and buffer operation: If the batteries are simultaneously discharged, they continue to be charged or remain fully charged. The unit automatically calculates and controls charging times.

Charging monitoring is free: multiple protection against overload, overheating, overvoltage, short circuit, malfunction and battery discharge through electronic regulation up to complete separation of the unit and the battery.

The vehicle's electrical system filter is built-in: easy parallel operation with other charging sources (EBL, battery chargers, engine and fuel generators, solar systems) on a single battery.
Charging cable compensation: Voltage losses on the charging cables are automatically compensated.

Battery temperature sensor connection (included): With lead-acid batteries (acid, gel, AGM), the charging voltage is automatically adjusted based on battery temperature. In cold conditions, this results in a better full charge of the weaker battery, and in summer temperatures, it prevents unnecessary battery gassing.

LiFePO4 batteries: Battery protection at high and especially low temperatures < 0°C.
A charging aid for deeply discharged lead-acid batteries: Gentle pre-charging of the battery (lead acid, gel, AGM) up to 8 V, then powerful battery support if the consumers are still switched on.

Charging programs

1 Gel: Charging program for gel batteries, characteristic IU1oU2oU3

Designed for sealed, gas-tight, Gel-/Dryfit batteries with fixed electrolyte, which generally require a higher charging voltage level and longer U1 holding times to achieve short charging times with particularly high storage capacity and to avoid long-term battery starvation.

2 AGM: charging program for AGM batteries/cells, characteristic IU1oU2oU3

Designed for charging sealed and gas-tight AGM (Absorbent-Glass-Mat) batteries in lead-acid technology, which require a particularly high U1 level with coordinated float times for full charge and then a moderate U2 level to maintain the charge (plate and round cell technology).

4 UNIVERSAL: Charging program for lead-acid/wet/AGM batteries, characteristic IU1oU2oU3

Universal program for charging and maintaining the charge of acid batteries in vehicles (mixed mobile/stationary). With a medium U1 level, it offers even shorter charging times, a good charge factor, and good acid mixing for open and sealed batteries, low-maintenance, maintenance-free standard, drive, lighting, solar, and heavy-duty batteries, as well as AGM batteries with a normal U1 level.

Li LiFePO4 : Charging program for lithium batteries, characteristic curve IU1oU2oU3

Charging program adapted to Lithium-LiFePO4 batteries with their own BMS and prescribed or integrated protection circuit.