SKU: 33301282950

Mastervolt Mac Plus 12/48-15 [81203205]

Sale price$233.98 Regular price$259.98
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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: 33301282950

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4.9 ★★★★★
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FXDawg
Phoenix, US
★★★★★ 5
Very happy with
Set name: Face - 1.7 oz.
I really like this. Quickly clear after applying. No sensitivity issues. Moisturizing. It does leave a sheen which I personally like and doesn’t feel overly greasy to me.
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Reviewed in the United States on June 2, 2026
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Brad
Belleville, US
★★★★★ 5
This sunscreen has worked well for me and I like that it is a mineral formula
Set name: Face - 1.7 oz.
This sunscreen has worked well for me and I like that it is a mineral formula. The main thing to know is that it can take a little effort to rub in fully so you do not see it on your skin, but I do not consider that a major problem. That is pretty normal with many mineral sunscreens, and I would rather deal with that than use something that does not agree with my skin. Once applied, I have been happy with it and have no real complaints. Overall, it has been a good face sunscreen for me.
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Reviewed in the United States on March 10, 2026
T
Verified Purchase
Tiana Frith
Draper, US
★★★★★ 5
Best sunscreen ever
Set name: Face - 1.7 oz.
I love how light it is, it doesn’t leave a white cast. It even leaves skin looking glowy. It also feels moisturizing. I have sensitive skin that breaks out with sunscreen. It doesn’t breakout with this one! I also love that it’s hsa eligible! Have already recommended and shared with others. I will never switch to another sunscreen.
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Reviewed in the United States on May 26, 2026
J
Verified Purchase
JLJ
Omaha, US
★★★★★ 4
Works great but very runny
Set name: Face - 1.7 oz.
I’d call this a liquid and not lotion. It literally pours out of the tube without even squeezing so has to be held upright at all times when the cap is off. Makes a real mess (and I do shake it well before opening as the instructions say). Other than the packaging, I really like the product. It blends well with no white cast after rubbing in, is moisturizing without looking greasy at all or causing breakouts, and has provided good sun protection. Impressed! Also like that while water and sweatproof, it washes off with a gentle face cleanser at the end of the day unlike some of the zinc-based products I’ve tried that leave a thick coating and require scrubbing. This is my first Blue Lizard product and I’ll probably keep using it as a daily sunscreen—but definitely not to throw in a bag and take to the beach because of the messy application. Bought the stick version to try out.
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Reviewed in the United States on July 1, 2022
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Gretchen
Phoenix, US
★★★★★ 5
Great for sensitive skin and actually dries clear!
Set name: Body - 3 oz., Set name: Body - 3 oz.
I'm trying to be on top of my sunscreen application after YEARS of never wearing it. My skin is extremely sensitive and prone to eczema. Any chemical sunscreen that was applied to my body (especially the elbow/knee pits) would cause me to break out in horrible eczema patches. I switched to mineral sunscreen, but everything left a ghostly white sheen. Luckily, this sunscreen does exactly as advertised. I've been using it daily for a week straight, and I have had no problems with it. The consistency of this product is thick, kinda sticky at first, and a bit hard to blend/spread out, but I think that's bound to happen with any sunscreen that's actually protective. It may also seem that it leaves a white cast initially, but after letting it dry for a minute or two, it becomes clear. Overall I can't recommend this enough, and I'm glad to finally have a sensitive-skin-friendly mineral sunscreen that doesn't leave a white cast :)
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Reviewed in the United States on April 1, 2026

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