SKU: 3460614952

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

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Description

Mastervolt 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 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: 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: yes

Stabilised: yes

Dimensions, hxwxd: 167 x 87 x 50 mm (6.6 x 3.4 x 2.0 inch)

Weight: 0.59 kg (1.3 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: 3460614952

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Product Reviews
A
Verified Purchase
Al
Cuba, US
★★★★★ 3
Good Basic Chair with a Few Drawbacks
Color: Black
I bought this Amazon Basics office task chair for my boyfriend who works from home. Overall, it’s a decent, simple chair that gets the job done for everyday use, especially if you just need something functional and affordable. However, there are a couple of downsides. The recline doesn’t go back as much as he would like, so it’s not ideal if you prefer to lean back and relax between tasks. Also, after about a month of use, the wheels don’t glide as smoothly as they did at first, which can be a bit frustrating when rolling across the floor. Overall, it’s a solid basic chair for light use, but if you want something with a deeper recline or super smooth mobility long-term, you might want to consider other options. Still a reasonable purchase depending on your needs.
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Reviewed in the United States on February 12, 2026
D
Verified Purchase
Dime-Sized Dame
Charlottesville, US
★★★★★ 5
Had for just over 9 years now and still pretty solid
Color: Black
I ordered this chair back in December 2015 for our front office, and it's been moved to our back shop where we fabricate. We're not a gentle work space by any stretch of the imagination; we build stuff and it's messy, lots of tools etc. This chair has held up surprisingly well! The faux leather is delaminating almost entirely on the seat but honestly, I'd expect that for faux leather on something that is used daily. The seat pad, in my opinion, has gotten de-poofed. So it's not plush anymore but still usable. I've asked the guy that's using it if they want an upgrade/update and they said they like it and don't want to change it out just yet. That's saying something! The size is nice and wide. We've had a range of differently sized folks sit in the chair over the years and the seat was always comfortable (less now without so much seat poof), I was able to sit cross-legged and the whole chair felt sturdy then as it does now. All of the standards functions you'd want an office chair to do, it can still do: it goes up and down smoothly, it rolls just fine, it's still pivot-reclines comfortably and doesn't feel like it's going to topple. I like it!
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Reviewed in the United States on January 15, 2026
A
Verified Purchase
Amazon Customer
Waukegan, US
★★★★★ 4
Good enough
Color: Black
Comfortable chair. Easy to put together. Allen nuts aren't cut perfectly so sometimes hard to get the wrench in there. My biggest complaint, and I didn't even realize this until I sat down in it, the arm rests are not adjustable and they are a little short for my liking.
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Reviewed in the United States on March 17, 2026
B
Verified Purchase
Brandon Odonnell
Lake Worth, US
★★★★★ 5
I love it!
Color: Black
This chair is so comfy! I also love that it goes up super high (as a tall man it's nice to have the kicking my feet sensation... Lol). It's wider than I imagined and it the first chair with arms that I can fit in as an almost 500 pound dude. The lumbar support is nice and also adjustable, too. The wheels are high quality and move you fast. It was pretty easy to put together, but deff get help from someone to hold pieces in place
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Reviewed in the United States on January 22, 2026
S
Verified Purchase
SE
San Leandro, US
★★★★★ 5
Sturdy chair
Color: Black
Sturdy. And comfortable. The box had a hole kicked in bottom ,had been retaped many times abd yet was ripped on multiple areas. Coming from Asia does that.
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Reviewed in the United States on June 2, 2026

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