SKU: 7976743936

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

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Description

Mastervolt Non Isolated DC Master DC-DC Converter (24V In / 12V 12A 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 a non isolated model which has an electrical connection between the input and the output, making it suitable to applications with negative earthing. It is also compact and efficient, with low heat generation. Traditionally, a service battery is

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 a non isolated model which has an electrical connection between the input and the output, making it suitable to applications with negative earthing. It is also compact and efficient, with low heat generation.

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: 245 W

Nominal output power: 164 W

Max. output current (for 2 min. intervals): 18 A

Continuous output current: 12 A

Nominal input voltage: 24 V

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

Galvanic isolation: no

Stabilised: yes

Dimensions, hxwxd: 127 x 87 x 50 mm (5.0 x 3.4 x 2.0 inch)

Weight: 0.405 kg (0.9 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
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7976743936

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Sandy
West Palm Beach, US
★★★★★ 5
Great taste
Very good biscuit, just as I remember them. Not too hard just right.
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Reviewed in the United States on April 9, 2026
C
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ckrug
Fort Morgan, US
★★★★★ 5
Good flavor & texture
McVitie's Ginger Nut biscuits are an English staple. They have good flavor and texture. This 3-pack is reasonably priced. Some of the packs had the end biscuits a bit crumbled, probably during shipment.
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Reviewed in the United States on July 19, 2024
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Christina Salfity
Massapequa, US
★★★★★ 5
Tasty Cookies
Fresh, tasty and delivered on time !!!
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Reviewed in the United States on April 3, 2026
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Marie Ranney
Draper, US
★★★★★ 5
Yum.
These were quite tasty, but they did break easily.
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Reviewed in the United States on June 30, 2025
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F Kestrel
Boise, US
★★★★★ 4
Cant find these MclVites ginger nut cookies in the local store any more.
Good value, not expired. My issue is amazon packaging. I can get three little watch batteries in a box snd three round packages of cookies like these in a soft bag. Cookies are not invincible to the perils of transit. I found quite a bit of crumbles and pieces of cookies. Thankfully crumbs makes an excellent yogurt topping.
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Reviewed in the United States on April 12, 2026

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