Votronic VCC 1212-90 CI 12V/12V 90A B2B Charging Converter 3363

The VCC 1212-90 CI from Votronic (MPN: 3363) is a high-performance B2B charging converter designed for regulated charging of 12V onboard batteries while driving. With a maximum charging current of 90 A, this battery charger is particularly well-suited for motorhomes, campers, specialty vehicles, and other vehicles with larger battery systems. The charging converter compensates for fluctuating input voltages and enables reliable charging of the service battery even in vehicles with smart alternators, such as those meeting Euro 6 standards. It operates without galvanic isolation between the input and output. Therefore, during installation, the specified ground connections, wire gauges, and fuses must be observed in accordance with the installation instructions.

Key Benefits

• High charging current of up to 90 A for high-performance 12V battery systems
• Suitable for gel, AGM, lead-acid, and LiFePO4 batteries
• Adjustable charging current limit up to 75 A
• Three adjustable input current limits for adaptation to the vehicle
• Support for smart alternators via D+ control
• CI-BUS interface for integration into compatible on-board management systems
• Temperature monitoring with included 825 temperature sensor
• Trickle-charge function to maintain the starter battery’s charge at up to 5 A
• Connections for additional voltage sensor wires and optional remote displays

Regulated battery charging for various battery types

It converts the voltage from the starter battery or alternator into a regulated charging voltage for the connected onboard battery. This ensures that the supply battery is charged during driving in accordance with the selected charging characteristic curve, regardless of fluctuations in the input voltage. The charge converter supports various lead-acid battery technologies as well as LiFePO4 batteries. The battery-specific charging programs allow the charging process to be adapted to the requirements of the respective storage technology. For LiFePO4 batteries, the battery manufacturer’s specifications and a suitable battery management system must be taken into account.

Adjustable Charging Power and Protection of the Vehicle Electrical System

With a maximum output current of 90 A, the converter is designed to charge larger onboard batteries. If necessary, the charging current can be limited to 75 A. In addition, three adjustable input current limits are available, allowing the current draw to be adapted to the capacity of the alternator and the existing electrical system. Automatic activation can be triggered via D+, the ignition, or—under suitable conditions—voltage-controlled. This allows it to be integrated into both conventional vehicle systems and vehicles with intelligent alternator management.

Temperature Monitoring and Trickle Charging of the Starter Battery

The included 825 temperature sensor supports temperature-dependent charge control. For lead-acid batteries, it allows the charging voltage to be adjusted according to the battery temperature. For LiFePO4 batteries, temperature monitoring serves to protect against improper charging conditions. In addition, the charge converter features a recharge function for the starter battery. If the onboard battery is powered by an external charging source, a charging current of up to 5 A can flow to the starter battery under the specified connection and operating conditions.

Technical Specifications

• Nominal input voltage: 12 V
• Input voltage range: 10.5 to 16.5 V
• Nominal output voltage: 12 V
• Maximum charging current: 90 A
• Limited charging current: 75 A
• Maximum input current draw: 125 A
• Input current limits: 100 / 82 / 64 A
• Recommended onboard battery capacity: 150 to 600 Ah
• Maximum onboard battery capacity: 800 Ah
• Supported battery types: Lead-acid, gel, AGM, and LiFePO4
• Recharge current to the starter battery: 0 to 5 A
• Weight: 1,480 g
• Dimensions (L x W x H): 234 x 139 x 74 mm

Package contents:

1x VOTRONIC VCC 1212-90 CI B2B charging converter
1x Temperature Sensor 825
1x Installation and User Manual