SKU: 89028579379

Mastervolt Mac Plus 12/48-15 [81203205]

Sale price$276.30 Regular price$307.00
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Description

Mastervolt Mac Plus 12/48-15 [81203205]Mac Plus 12 48 15 Boost Your Service Battery Too often, service batteries dont 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 48V and 36V solve that problem. With brand new bi directional technology, the Mac Plus can use each side as an input or output, delivering a reliable and consistent charge to both service and starter batteries.

Mac Plus 12/48-15

Boost Your 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 48V and 36V solve that problem. With brand-new bi-directional technology, the Mac Plus can use each side as an input or output, delivering a reliable and consistent charge to both service and starter batteries.

Proven Mastervolt Quality

The Mac Plus uses the proven Mastervolt 3-step+ charge algorithm, delivering a quick and easy charge, even to completely flat batteries. By knowing when the engine is running and providing charge, you can also be sure that the Mac Plus will never drain your starter battery.

A robust design holds up in even the harshest conditions, with battery temperature-optimized charging and 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 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. And advanced high-frequency technology with modern microprocessors ensures minimal power loss when switching from 36/48V to 12/24V 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:

  • Bi-directional technology
  • Get either 48V or 36V power from a single unit
  • 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 compatible, with 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

General Specifications:

  • Battery Voltage Sense: Yes
  • Status indicator: Yes, 3 color double LED
  • Communication protocol: MasterBus, CZone & NMEA 2000
  • Output voltage: 30-60 V DC
  • Nominal output voltage: 36/48 V
  • Output voltage stabilization: 2 % at extremes of temps, load, and input
  • Output voltage ripple (peak-peak): Max. 1 %
  • Max. output power: 900 W
  • Max. output current: 15 A
  • Nominal input voltage: 12 V DC
  • Input voltage range: 8-16 V
  • Max. input current: 60 A
  • Galvanic isolation: No
  • Efficiency: > 95 % (at nom. input voltage, full load); 97 % peak
  • Parallel configuration: Yes, up to 4
  • Alarm contact: Yes, through MasterBus, CZone, DIP Switch, or remote switch
  • Engine run signal input: Yes (active high/active low)
  • DIP switches: Yes, for basic setup
  • Dimensions, hxwxd: 255x165x66 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, ABYC & UKCA

Technical Specifications:

  • Battery types: Gel, AGM, Lithium Ion, user-defined
  • Power consumption: < 5 mA, < 10 mA in CZone, < 1 mA in MasterBus
  • Temperature range (ambient temp.): - 25 °C to 60 °C; derating > 40 °C/104 °F
  • Cooling: Natural cooling
  • Protection degree: IP23
  • Protections: Overload, over-temperature, DC short circuit, reversed polarity (fuse)

Specifications:

  • Charger Input - Voltage: 12v
  • Charger Output - Amps: 15a
  • Charger Output Voltage: 36/48V
  • Box Dimensions: 4"H x 9"W x 15"L WT: 5.6 lbs
  • UPC: 816882023446

Quick Guide (pdf)
Owner's Manual (pdf)
Brochure (pdf)
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 89028579379

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Carlos H. Davila Jr.
Fort Morgan, US
★★★★★ 5
Best lotion!
Love this lotion and the scent is very refreshing.
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Reviewed in the United States on February 7, 2026
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Everyday Reviews
Houston, US
★★★★★ 5
Deep Moisture Without the Greasy Feel
Size: 20.3 Fl Oz (Pack of 1)
Deep Moisture Without the Greasy Feel I’ve tried countless lotions over the years for my dry skin, and this Vaseline Intensive Care Advanced Repair is one of the best. It has that classic Vaseline jelly component, but in a light lotion form that actually sinks in quickly instead of sitting on top of your skin. The first thing I noticed is how non-greasy it feels—you don’t get that sticky film that some heavy moisturizers leave behind. I can put this on in the morning and go about my day without leaving residue on my clothes or phone. The formula works fast. Within a couple of days, the dry patches on my arms and shins were noticeably softer, and by the end of the week my skin felt consistently smooth. It’s also truly unscented—no heavy perfumes, which makes it perfect for sensitive skin or for layering with a cologne or perfume. The fact that it carries the National Eczema Association seal of acceptance is reassuring too. The 20.3 oz bottles are generous, and the pack of three means I can keep one in the bathroom, one by the bed, and one in the guest room. That kind of convenience makes it easy to stick to daily use. A small note: because it’s a “healing” lotion, the texture is a little thicker than a lightweight daily moisturizer, but that’s exactly why it works so well. Just don’t expect it to be a thin, watery lotion—it’s more substantial. Bottom line: A rich but non-greasy lotion that heals dry, itchy, or sensitive skin quickly, and the value of the 3-pack makes it a smart buy for anyone who needs reliable daily moisture.
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Reviewed in the United States on September 4, 2025
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Ronna
Lake Worth, US
★★★★★ 5
Healing moisturizer
Size: 6.77 Fl Oz (Pack of 2)
Great product for dry skin in the Winter time. Ideal Moisturizer.
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Reviewed in the United States on December 18, 2025
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Cali
Draper, US
★★★★★ 5
Excellant product..excellant pricing
Size: 20.3 Fl Oz (Pack of 1)
Another great product that I can now get from Amazon and not have to worry about "locating" in some store. Amazon's price is great for the sizing of the bottle, the product is absolutely non-greasy, very low in fragrance. I use it for an all-over body lotion and my skin stays soft.
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Reviewed in the United States on May 2, 2026
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Diana Davis
Lake Worth, US
★★★★★ 4
Good product and value
Size: 6.77 Fl Oz (Pack of 2)
Absorbs well, good for dry skin
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Reviewed in the United States on February 18, 2025

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