Votronic 20A-12V Battery Charger Pb 1220 SMT 2B - 3101

Votronic 20A-12V Battery Charger PB1220 SMT2B for Lead-Acid and Lithium Batteries

Designed for high-quality motorhomes, marine applications, special-purpose vehicles, and off-grid systems.

Votronic chargers are characterized by high operational reliability and high availability, thus representing the state of the art. Their high-quality charging technology and robust power electronics, combined with intelligent microprocessor control, ensure exact compliance with charging voltages, currents, and times, and thus a long battery life. A variety of different versions of the devices are available. This makes it easy to find the right charger for your application.

Votronic charging technology has been used for years in professional emergency vehicles such as fire engines, ambulances, and coast guard vessels! Quality Made in Germany!

All charging programs are applied by the charger for gentle full charging and subsequent battery maintenance. When a temperature sensor is used, temperature compensation is also applied, adapted to the battery type. The power supply of connected consumers is also provided during charging, dimensioned so that no more than 50% flows to the consumers during the I-phase (initial charging).

When the batteries are fully charged, almost the entire possible device charging current is available for the consumers, without the batteries being discharged.

Other special features at a glance:

• 15A main charging / 2A auxiliary charging
• Charging programs Gel, AGM, Acid, LiFePO4 (No. 1, 2, 4 and Li ) adjustable to battery type
• Excellent charging technology
• Silent-Run function adjustable (nighttime reduction)
• Disconnection of the batteries in the event of a power failure, overheating, or malfunction
• Charging voltages free from peaks, thus preventing overcharging
• Fully automatic continuous operation for constant battery readiness
• Separate auxiliary charging output "S" for supporting and maintenance charging of the vehicle starter battery, max. 2A
• Automatic battery regeneration during long periods of inactivity (2x per week)
• Compensation of voltage drops on the charging cables for exact compliance with charging voltages
• Built-in onboard network filter: trouble-free parallel operation with solar systems, generators, alternators, etc. on a battery.
• Intelligent microprocessor control takes into account the simultaneous supply of consumers connected to the battery
• Precise battery temperature compensation (temperature sensor required)
• Power supply function: Enables the supply of consumers without a battery (e.g., during battery replacement)

Selectable charging programs / charging curves:

"LiFePO4": charging program specifically for lithium batteries

Charging program tailored to lithium-LiFePO4 batteries with their own BMS and mandatory or built-in protection circuitry. A special standby maintenance keeps the LiFePO4 battery automatically at a state of charge of 50-80%, which is advantageous for its service life, when the vehicle is parked (seasonal operation), and also buffers 12 V consumers as well as the vehicle starter battery. In addition, a regular Auto Wake Up function activates the battery cell balancing.

1. "Gel": charging program for gel batteries, curve IU1oU2oU3

Tailored to sealed, gas-tight gel/dryfit batteries with fixed electrolyte, which generally require a higher charging voltage level and longer U1 hold times to achieve short charging times with particularly high capacity storage and to avoid long-term battery "starvation". Among other things, perfectly suited for our WATTSTUNDE Gel batteries.

2. "AGM": charging program for AGM / mat batteries, curve IU1oU2oU3

Designed for charging sealed, gas-tight AGM (Absorbent-Glass-Mat) batteries and those in lead-mat technology, which require a particularly high U1 level with coordinated hold times for full charging and then a moderate U2 level for maintenance charging (round cell and plate technology).

4. "UNIVERSAL": charging program for lead-acid / wet batteries, curve IU1oU2oU3

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

Technical data: