24 V - Mass Combi

The Mastervolt Mass Combi combines the best of both worlds, with an advanced battery charger and silent inverter rolled into one compact device. It is ideal for most boats, from sloops to 16-metre yachts, as well as for heavy mobile applications (E-mark certified). Following the expansion of Mastervolt’s range with two 48 V models, the Mass Combi is now also available for electric propulsion.

One of the key reasons for the Mass Combi’s popularity is its versatility. The starter and service batteries are charged quickly and completely, while the inverter provides silent and clean power. When insufficient shore power is available, the Mass Combi battery provides a powerboost so that you can continue using your 230 V equipment. 

Modern technology

The design of the Mass Combi is both unique and characteristic of Mastervolt. Rather than installing heavy transformers, our lightweight, high-frequency technology offers major benefits regarding size, weight and sound (no hum!). The technology also ensures an exceptionally high efficiency with a minimal conversion loss and a low no-load consumption.
The Mass Combi meets all your requirements and more! 

Combined functionality

  • Charging two individual battery banks.
  • Supplies 12, 24 and 48 Volt onboard power.
  • Invert to 230 V/50 Hz pure sine wave voltage.
  • Multiple distribution and switching systems.
  • Powerboost from battery when shore power is limited (shore/generator support).
  • Parallel function.


  Mass Combi
(230 V)
Mass Combi
(230 V)
Mass Combi
(230 V)
Mass Combi
(230 V)
Nominal battery voltage 24 V 24 V 24 V 24 V
Nominal output 1200 W 2000 W 2500 W 4000 W
Maximum output 2400 W 4000 W 5000 W 7500 W
Maximum efficiency 92% 93% 93% 93%
Maximum charge current 35 A 60 A 60 A 120 A
Output voltage 230 V - 50 Hz 230 V - 50 Hz 230 V - 50 Hz 230 V - 50 Hz
Dimensions (hxwxd) 371x318x143 mm 496x318x156 mm 496x318x156 mm 496x318x279 mm


Product images