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    • Mastervolt Mac Plus 121250  CZone 81205105
    • Mastervolt Mac Plus 121250  CZone 81205105
    • Mastervolt Mac Plus 121250  CZone 81205105
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    Mastervolt Mac Plus 12/12-50 + CZone [81205105]

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    Sale Price $544.99 Regular Price $709.99
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    Mac Plus 12/12-50 + CZone

    Boost the Service Battery

    Too often, service batteries don’t get the charge they need. This is a problem made worse by smart alternators and start/stop systems, which result in slow and insufficient charges. The Mac Plus DC-DC charger solves this problem, providing a quick, safe, and consistent charge to the service battery. And, by knowing when the engine is running and providing charge, users can be sure that the Mac Plus will never drain a starter battery.

    Proven Mastervolt Quality

    Users get peace of mind knowing that they have the best on board. Using the proven Mastervolt 3-step+ charge algorithm, the Mac Plus delivers a quick and easy charge, even for completely flat batteries.

    A robust design holds up in even the harshest conditions, with battery temperature-optimized charging and a high-quality aluminum housing to ensure superior protection against dust and water ingress. The power-efficient design also allows the Mac Plus to operate silently and without a fan.

    Total Power Flexibility

    With a wide DC input range, the Mac Plus allows for all DC sources and can charge two batteries from a single alternator or charger. It supports a full range of chemistries and battery types, including lithium. It also functions seamlessly with modern alternators such as Euro 5 and 6, ensuring proper charging by providing constant power, even when the alternator is inactive.

    Parallel configuration of up to ten units will provide over 100 amperes. Advanced high-frequency technology with modern microprocessors ensures minimal power loss when switching from 12V to 24V and vice versa.

    Analog voltage sense ports are also available to compensate for voltage drops and maintain proper charging.

    Superior Monitoring & Control

    Compatibility with CZone®, NMEA 2000®, and MasterBus delivers truly superior monitoring and control and ensures Mac Plus integrates easily into complete systems. Achieve the best performance possible via various controllers and high-quality MOSFETs. And configure the Mac Plus with ease via MasterAdjust, the CZone configuration tool, or even via the on-board DIP switches.

    Features:

    • Fast and safe charging, even during short trips
    • Fanless design for silent operation
    • Suitable for flooded, Gel, AGM, and Li-Ion batteries (incl. LiFePO4)
    • Even charges fully depleted batteries
    • Engine run detection protects the starter battery
    • Adjustable current limits to meet Euro 5/6 requirements
    • Voltage stabilization protects sensitive equipment, lights, and loads
    • Parallel operation to obtain charging capacities well over 100 Amps
    • MasterBus, CZone, and NMEA 2000 are compatible for intelligent system monitoring and automation
    • Temperature compensation and voltage sense for an optimal charging result
    • E-Mark/R10 certification for mobile applications
    • Power supply mode offers stable power for sensitive loads
    • Heavy-duty connections for easy installation and quick setup via DIP switches

    Specifications:

    • Battery Temperature Sensor: Yes, included
    • Battery Voltage Sense: Yes

     General Specifications:

    • Status Indicator: Yes, 3-color LED
    • Communication Protocol: MasterBus, CZone & NMEA 2000
    • Output Voltage: 10-15 V
    • Nominal Output Voltage: 12 V
    • Output Voltage Stabilization: 2 % at extremes of temperatures, load, and input
    • Output Voltage Ripple (peak-peak): Max. 1 %
    • Max. Output Power: 725 W
    • Nominal Output Power: 675 W
    • Max. Output Current: 50 A
    • Output Charge Current (3-step mode): 50 A
    • Nominal Input Voltage: 12 V
    • Input Voltage Range: 10-16 V
    • Max. Input Current: 50 A
    • Galvanic Isolation: No
    • Voltage Limited: Yes
    • Efficiency: > 95 % (at nom. input voltage, full load); peak 97
    • Parallel Configuration: Yes
    • Alarm Contact: Yes, through MasterBus
    • MasterBus Powering: No
    • Engine Run Signal Input: Yes (active high/active low)
    • DIP Switches: Yes, for basic setup
    • Dimensions, H x W x D: 255 x 165 x 66 mm (10.0 x 6.5 x 2.6 inch)
    • Weight: 2 kg (4.4 lb)
    • Compliance: CE, E-Mark, SAE J1171 & ISO 8846 Ignition Protected

     Technical Specifications:

    • No-load Consumption: < 2 mA
    • Charge Characteristic: 3-traps+
    • Battery Types: Flooded, Gel, AGM, spiral, Lithium Ion, traction, user-defined
    • 3-Step Charge Option: Yes (DIP switch settings)
    • DC Consumption: < 5 mA
    • Connections: 3 x M8 terminal for cable diameters of 10-50 mm², (positive input, positive output, joint negative connection) 8-pole screw connection for cable diameters of 0.75-1.5 mm² (remote on/off, temperature sensor, voltage measurement
    • Temperature Range (ambient temp.): -25 degrees C to 60 degrees C; derating > 40
    • Cooling: Natural cooling
    • Protection Degree: IP23
    • Protections: Overload, over temperature, DC short circuit, reversed polarity (fuse)
    • MasterBus Compatible: Yes

    Specifications:

    • Charger Input - Voltage: 12v
    • Charger Output - Amps: 50a
    • Charger Output Voltage: 10-15v
    • Box Dimensions: 4"H x 9"W x 15"L WT: 5.6 lbs
    • UPC: 816882023491

    Owner's Manual (pdf)
    Product Specifications
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    Documents
    User Manual Download
    Specification Sheet Download
    Safety Guide Download
    Service & Support

    Warranty

    This product is backed by a 12-month limited warranty, covering defects in materials and workmanship under normal use.

    Technical Assistance

    Our dedicated support team is available to assist with product setup, operation guidance, and troubleshooting. Contact us via email or phone for prompt service.

    Documentation & Downloads

    Access essential resources including the user manual, technical specifications, and safety instructions in our online support center.

    Replacement Parts & Accessories

    We offer a full range of genuine replacement parts, including batteries, chargers, and compatible accessories to ensure long-term performance.

    Training & Tutorials

    Browse our library of how-to videos and maintenance tips to get the most out of your cordless drill.

    FAQs

    Find quick answers to common questions

    Product & Usage

    1. Are KRANK tools built for professional use?

    Yes, all our tools are engineered for heavy-duty performance and long-term reliability.

    2. Are KRANK tools safe to use for beginners?

    Yes, our tools are designed with safety features and easy handling in mind.

    3. Can KRANK tools be used in extreme conditions?

    Yes, they are tested to perform reliably in demanding environments.

    Maintenance & Accessories

    1. What maintenance is required for the tools?

    Regular cleaning and proper storage are usually enough to keep your tools in top condition.

    2. Can replacement parts or accessories be purchased separately?

    Yes, we provide compatible parts and add-ons to extend the life of your tools.

    3. Do you provide instruction manuals or usage guides?

    Every tool comes with a detailed user manual, and digital guides are available online.

    Warranty & Guarantee

    1. Do the tools come with a warranty?

    Every KRANK tool includes a 1-year warranty, with extended options available on select products.

    2. How do I register my KRANK tool for warranty coverage?

    You can register online using your product serial number for faster support.

    3. What does the warranty cover?

    It includes defects in materials and workmanship under normal use conditions.

    4. Is there an option to extend the warranty?

    Yes, extended warranty plans are available for select tools at checkout.

    Purchasing & Support

    1. How fast is shipping and delivery?

    Orders ship within 24 hours, and delivery typically takes 3–5 business days.

    2. Do you offer bulk or corporate purchasing options?

    Yes, KRANK provides special pricing and packages for business or team orders.

    3. How can I contact customer support if I need help?

    You can reach our support team by email or phone — we’re here to assist you.

    Can’t find your answer?

    Feel free to reach out to us!

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