SKU: 44152506121

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: 44152506121

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4.1 ★★★★★
Based on 10 reviews
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Product Reviews
N
Nightowl
Boise, US
★★★★★ 5
Dogs loved them, but gone very quickly
Flavor Name: Braided Stick (Chicken)
I picked up these turkey tendon braided sticks as a chew treat for my dogs, and they had zero hesitation. Both dogs were immediately interested and happily worked through them without any convincing. They seem very tasty and easy for dogs to chew, which makes them a nice occasional reward. They seem to be of healthy, quality ingredients, which is always a plus. Similar to some other natural chews I’ve tried, they just don’t last very long with bigger or enthusiastic chewers. What looks like it might be a longer distraction turns into a fairly quick snack in our house. Still, the dogs enjoyed them and tolerated them well, so they work fine as a treat, just not a long lasting chew for large dogs.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 27, 2026
M
Michael O'Neal-Petterson
Chelsea, US
★★★★★ 3
Expensive for What You Get
Flavor Name: Braided Stick (Chicken), Flavor Name: Braided Stick (Chicken)
My dogs love chews and I like to try different kinds. I thought they would be longer lasting since they are braided and turkey tendon. These come in a small bag with just a few chews. The chews aren't very big either. They are chewy but not so much that they take a while to eat. I gave one to my 36 lb labradoodle and he finished it in a couple minutes - so it isn't a long-lasting treat at all. At this price point, I would expect more treats or something that lasts a while. My dog loved these but I expect more bang for my buck.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 31, 2025
S
Seri Lynn
Carnegie, US
★★★★★ 4
Great braided dog snacks, good ingredients - cost a bit much for the number you get
Flavor Name: Braided Stick (Chicken)
I ordered these Chicken flavored Turkey Tendon Braided Sticks for my three medium sized dogs. I had hoped these would last a little while so gave them one each (there was only like 6 in the pack), but they gobbled them down before I even realized it. They really loved them. I would love to get them these as a special treat every now and again, but they're just too expensive no longer than they last. I know that they're quality treats, made with good ingredients and that really matters, still for no more than you're getting I feel they should cost about a third less. At this rate they're about $3 a piece, and I could get more of some other treat for that price. But if you don't care about the pricing and want only the best for you dogs, then this would be a perfect choice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 5, 2026
K
Karie Watterson
Draper, US
★★★★★ 5
Dog chew treat
Flavor Name: Braided Stick (Chicken), Flavor Name: Braided Stick (Chicken)
​I recently purchased these Turkey Tendon Braided Sticks for my dog, and they have been a huge hit. Here are a few reasons why we both liked them: ​High Engagement: My dog was immediately interested and stayed busy with the chew. ​Healthy Ingredients: I appreciate that they are a Turkey Tendon Recipe, which feels like a much healthier alternative to some other chews on the market. ​Quality Design: The braided texture seems to help with the chewing experience and likely helps keep teeth clean. ​I will definitely be buying these again. If you're looking for a treat that is both enticing and made from good ingredients, I highly recommend giving these a try!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026
A
Amazon Customer
Carnegie, US
★★★★★ 4
My Dog Loves Them, But They Don’t Last Long
Flavor Name: Braided Stick (Chicken)
My dog loves these iPaw Turkey Tendon Braided Sticks, but they don’t last as long as I expected. They keep him entertained for a short while and are tasty enough that he eagerly chews them. The natural ingredients are a nice touch, making them a satisfying treat despite the shorter chew time. Overall, a tasty snack my dog enjoys, even if it’s fairly quick to go through.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 3, 2026

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