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

o Max. output power: 82 W

o Nominal output power: 41 W

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

o Continuous output current: 3 A

o Nominal input voltage: 24 V

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

o Galvanic isolation: yes

o Stabilised: yes

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

o Weight: 0.29 kg (0.6 lb)

o Compliance: CE, E-mark 

Technical specifications

o DC consumption: < 15 mA

o Connections: fast-on

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

o Cooling: natural cooling

o Protection degree: IP53

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: 51141611225

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RichieVee at the Piano
Battle Creek, US
★★★★★ 3
BUTTONS LIKE A SMALLER SIZE. GOOD QUALITY.
DESIGN IS EXCELLENT. QUALITY IS FINE. I WEAR A LARGE, BUT THIS VEST, IN A LARGE, DID NOT ALLOW ME TO BUTTON ... AS IF IT IS A MEDIUM FIT. WILL RETURN, BUT IT IS A VERY GOOD VEST OTHERWISE.
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Reviewed in the United States on September 23, 2025
D
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David Bays
Draper, US
★★★★★ 5
Well made and looks great.
This vest fits well and is well made. It feels tailored. I feel great and look good wearing it.
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Reviewed in the United States on December 3, 2025
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Jason Bottari
San Leandro, US
★★★★★ 5
Looks great feels great fits great incredible price
Looks great feels great fits great incredible price
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Reviewed in the United States on December 2, 2025
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J Van Jasper
Chelsea, US
★★★★★ 5
Quality plus and at a bargin!
Color: Light Grey, Size: Large
Love this blazer for its fit, quality of manufacture, and ease of packing for my travels
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Reviewed in the United States on May 2, 2026
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Verified Purchase
Douglas A. Roemer
Port Orchard, US
★★★★★ 4
I think it runs big. Otherwise good. Poor packaging though.
Color: Light Blue, Size: Large
I ordered a Large. I am 5’ 9 1/2”. Fit, 170lbs (athletic/slim build). The Large was noticeably too big. Looked “sloppy”, like it fit once and then I lost a bunch of weight. That said, the material/weight was very nice. This is a nicely made, casual blazer. Will look good with jeans/khakis or dressier pants. REALLY nice for the price (I got it on sale, 50% off ($31.99) though. Maybe a push, or nicer ones for $60/70, but I’d still say a good value. Packaged in a bag as people have mentioned. I’ve returned for a medium & will probably have to take to the dry cleaner immediately to have pressed, but still worth it. UPDATE: returned for a size M. Much better fit for my size. This one was packaged nicer too. Still in a bag, but folded nicely enough to wear right away. I’m planning on buying more colors.
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Reviewed in the United States on March 7, 2024

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