Mastervolt 81205200 - Mac Plus DC/DC Converter Charger 24/12–50 (Replaces 81400352)

Mastervolt 81205200 - Mac Plus 24/12-50 DC-DC Converter

Key Features:

• DC-DC converter and charger designed to boost charging voltage for 12V service batteries in 24V systems
• Ensures fast and safe charging during short trips, even for fully depleted batteries
• Fanless design for silent operation, ideal for onboard applications in boats, RVs, and trucks
• Compatible with multiple battery types, including flooded, Gel, AGM, and Li-Ion (LiFePO4)
• Voltage stabilization to protect sensitive equipment and loads from fluctuating power
• Parallel operation capability for charging capacities over 100A, with automatic engine run detection to protect starter batteries
• Integrated MasterBus compatibility for intelligent system monitoring and automation

Specifications:

Battery Charger Specifications

• Battery Temperature Sensor: Yes, included
• Battery Voltage Sense: Yes
• Charge Characteristic: 3-step+ for optimized charging efficiency
• Battery Types Supported: Flooded, Gel, AGM, spiral, Li-Ion (incl. LiFePO4), and user-defined

Electrical Specifications

• Output Voltage Range: 10-15 V
• Nominal Output Voltage: 12 V
• Output Voltage Stabilization: 2% at extreme temperatures, load, and input variations
• Output Voltage Ripple: Max. 1% peak-to-peak
• Max Output Power: 750 W
• Nominal Output Power: 710 W
• Max Output Current: 50 A
• Nominal Input Voltage: 24 V
• Input Voltage Range: 19-30 V
• Max Input Current: 30 A
• Efficiency: > 95%, peak efficiency up to 97%
• Galvanic Isolation: No (non-isolated model)

General Specifications

• Status Indicator: 3-color LED
• Parallel Configuration: Yes, for increased current capacity
• Alarm Contact: Yes, through MasterBus
• Engine Run Signal Input: Yes, active high/active low
• DIP Switches: Yes, for basic setup
• Cooling: Natural cooling (fanless design)
• Dimensions: 255 x 165 x 66 mm (10.0 x 6.5 x 2.6 in)
• Weight: 2 kg (4.4 lb)
• Compliance: CE, E-Mark, SAE J1171, ISO 8846 Ignition Protected

Protection Specifications

• Protection Degree: IP23
• Protections: Overload, over-temperature, DC short circuit, reversed polarity (fuse)

Compatibility and Application:

• Designed for marine, RV, and vehicle applications requiring stable 12V power in 24V systems
• Ideal for boosting charge voltage in systems with long cable runs, smart alternators, or start/stop engines
• Supports parallel operation for applications requiring high charging capacities

Benefits:

• Efficiently boosts charge voltage to keep service batteries fully charged, even during short trips
• Silent fanless design reduces noise, ensuring quiet operation in sensitive onboard environments
• Compatible with multiple battery types, enhancing flexibility for various power systems
• Engine run detection protects starter batteries, prolonging battery life and preventing discharge issues
• High efficiency and natural cooling reduce energy loss and prolong the lifespan of components
• Rugged design with IP23 protection and solid M8 connections withstands vibration and environmental exposure in challenging conditions