SKU: 35058392249

Mastervolt Non Isolated DC Master DC-DC Converter (48V In / 12V 20A Out)

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Description

Mastervolt Non Isolated DC Master DC-DC Converter (48V In / 12V 20A 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

o Max. output power: 326 W

o Nominal output power: 272 W

o Max. output current (for 2 min. intervals): 24 A

o Continuous output current: 20 A

o Nominal input voltage: 48 V

o Input voltage range (max.): 40-62 V DC (65 V)

o Galvanic isolation: no

o Stabilised: yes

o Dimensions, Height: 217mm x Width: 87mm x Depth: 50mm (8.5" x 3.4" x 2.0")

o Weight: 0.77 kg (1.7 lb)

o Compliance: CE, E-mark 

Technical specifications

o DC consumption: 25 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: 35058392249

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Dave
Whiting, US
★★★★★ 5
One Tough Ball!
Color: Blue
Our dogs are loving this ball. Our 1 yr old hound is a world-class chewer and he can't make a dent in this ball. The interactive buzzing and bouncing keeps them entertained for long durations. It's a mite noisy but the barking from the 1 yr old is much louder, lol. Even turned off, they like playing with it and chewing on it. Based on the tough construction, we think it will last much longer than traditional chew balls.
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Reviewed in the United States on March 22, 2026
J
Verified Purchase
Janice A
Boise, US
★★★★★ 5
My puppy’s favorite
Color: Orange
Great quality and built to last. My dog really enjoys playing with it and stays entertained for quite a while. The material is strong yet safe, and the included drawstring bag is a convenient extra for easy storage. Is colorful and my become my puppy’s favorite.
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Reviewed in the United States on March 1, 2026
A
Verified Purchase
Amazon Customer
Battle Creek, US
★★★★★ 1
If you love your dog…don’t buy this.
Color: Orange
We have a nonaggressive English cocker. She opened the ball every time she played with it. And yes, we are closing it as hard as we can. I do not recommend this toy for any dog! This is a dangerous toy for a dog that is not supervised.
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Reviewed in the United States on March 16, 2026
J
Verified Purchase
jeff c
Draper, US
★★★★★ 4
Keeps your dog busy
Color: Blue
Good toy to keep your dog busy. Make sure you check it periodically to ensure it stays together.
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Reviewed in the United States on April 3, 2026
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OLINDA QUEZADA 🌸
Los Angeles, US
★★★★★ 5
dog ball
Color: Blue
This ball is perfect for keeping my dog ​​active and entertained. It's made of strong, durable material, ideal for games of fetch. It doesn't break easily and is light enough for him to carry in his mouth without any problem.
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Reviewed in the United States on February 23, 2026

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