Engineered for the toughest tasks

Mastervolt is widely known as a supplier of innovative electrical power management systems for marine and solar applications. Recently, the company is increasingly focussing on mobile and automotive applications, also because of tightening environmental guidelines in both Europe and America. The new MAC PLUS DC-DC converters are specifically designed for charging supplementary batteries in various types of vehicles. Mastervolt reached out to Helder-id to further develop this new concept with the focus on manufacturability.

Engineering | Prototyping
Professional | Mobility | Maritime


The MAC PLUS DC-DC converters are engineered to meet the most stringent requirements in any situation a reliable mobile power supply is needed. Helder-id worked closely with the Mastervolt developers to achieve an ultra-compact configuration and at the same time robust enclosure to shield the complex electronic circuitry. The innovative fan-less cooling concept was thoroughly tested using mock-ups and prototypes.

It was nice to work with Helder as they carefully took our wishes into account. We were ready to go straight into production without any major revisions!

Harrie BotsMastervolt

Mastervolt is active in the field of innovative autonomous power solutions since 1991. As specialists in management, conversion and storage of electrical energy, Mastervolt offers a comprehensive product portfolio with a power range from 300 Watt to 40 kWatt, targeted on demanding markets such as marine, off shore, industrial, autonomous solar, mobile, and infrastructure.

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