SKU: 51141611225

Mastervolt Isolated DC Master DC-DC Converter (24V In / 12V 3A Out)

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Description

Mastervolt Isolated DC Master DC-DC Converter (24V In / 12V 3A Out)The Mastervolt DC Master is a DC DC charger which is designed to provide quick and safe charge to the service battery, providing stabilised voltage to protect the battery and the equipment it powers. This is an isolated model which has galvanic protection between the input and the output, as well as interference supression for sensitive equipment. Traditionally, a service battery is linked to the starter battery via a charge relay. The starter battery

The Mastervolt DC Master is a DC-DC charger which is designed to provide quick and safe charge to the service battery, providing stabilised voltage to protect the battery and the equipment it powers. This is an isolated model which has galvanic protection between the input and the output, as well as interference supression for sensitive equipment.

Traditionally, a service battery is linked to the starter battery via a charge relay. The starter battery will be located near to the alternator and receives most of the charge current. However the service battery is usually further away. The long cables used to connect it up cause a voltage drop, leading to slower charging, which can result in failing appliances and premature failure of the battery.

Modern, fuel efficient engines are equipped with smart alternators, following regulations such as Euro 5 and Euro 6. Instead of a constant output, smart alternators provide a variable voltage; after a brief charging period, voltage is reduced and the charging stops. Furthermore, the energy produced by regenerative braking leads to voltage peaks. Service batteries coupled in the traditional way will receive hardly any charge and may be damaged by these peak voltages.

To solve these issues, Mastervolt offers the DC Master chargers, which monitors the service battery and compensates the voltage loss. There is no fan so operation of the charger is silent and these units also have 2 minutes of extra capacity, perfect for if you need a quick power boost. The DC Master unit is supplied complete with mounting bracket, screws and fasteners.

General specifications

o Nominal output voltage : 13.6 V

Max. output power: 82 W

Nominal output power: 41 W

Max. output current (for 2 min. intervals): 6 A

Continuous output current: 3 A

Nominal input voltage: 24 V

Input voltage range (max.): 20-32 V DC (35 V)

Galvanic isolation: yes

Stabilised: yes

Dimensions, hxwxd: 89 x 87 x 50 mm (3.5 x 3.4 x 2.0 inch)

Weight: 0.29 kg (0.6 lb)

Compliance: CE, E-mark 

Technical specifications

DC consumption: < 15 mA

Connections: fast-on

Temperature range (ambient temp.): -25 °C to 80 °C, derating > 30 °C (-13 °F to 176 °F)

Cooling: natural cooling

Protection degree: IP53

Shipping Notes
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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]
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SKU: 51141611225

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4.2 ★★★★★
Based on 11 reviews
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Verified Purchase
Destiny Close
Grantham, US
★★★★★ 5
Sturdy& Strong for pitty
my pitbull approves! she had it for about an hour now and usually would have it torn apart but nope it’s still standing!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
M
Molly P.
Boise, US
★★★★★ 5
Great for big chewers
My dogs have to have these. Have to. When I come home from work they each grab one and prance around like they just caught a moose or something. This past weekend my big boy doodle wanted me to toss it to him like I do his tennis ball. He kept dropping it for me to toss. It was hard explaining that it would be the worst boop he ever felt. Ok, lets talk about longevity. I've had these for over a month and they still look great. Barely looked chewed at all. These are tough and poodles supposedly have soft mouths but mine chew on these a lot. They are large. My female is 60 pounds and my Dood is 90. These chew toys keep my pets engaged when I am busy doing all the things at home so that takes some pressure off of me. I would buy them again for sure.
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Reviewed in the United States on May 26, 2026
R
Verified Purchase
Rhonda M
Louisville, US
★★★★★ 1
It's indestructible because your dog won't touch it.
It's made of hard plastic and has a weird odor. Both of my dogs just looked at it, smelled it and walked away.
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Reviewed in the United States on May 7, 2026
S
Scott Brown
Bozeman, US
★★★★★ 5
Great Teething Toy for an Active Puppy
Our 6-month-old Goldendoodle has really enjoyed chewing on these rings. They’ve been especially helpful while she’s been teething, and so far she hasn’t made a dent in them, which is impressive given how much she chews. There’s clearly some sort of flavor or scent on the toy that makes it especially attractive to her, so it keeps her engaged much longer than some other chew toys we’ve tried. The rings feel durable, well made, and are a great way to keep an active puppy occupied. Highly recommend for teething puppies or dogs that are aggressive chewers.
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Reviewed in the United States on May 12, 2026
A
Anita Woelfel
Cuba, US
★★★★★ 2
Super hard plastic
This might be okay for big dogs but my little dogs are not interested at all. I’ve heard if you can’t make an indentation w/ your thumb nail, it’s too hard and your dog could chip or break a tooth…
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Reviewed in the United States on March 27, 2026

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