Mastervolt Mass 24/25-2 battery charger - 40020256

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Rated output voltage: 24 V
Total load current: 25 A at 28.5 V
Number of outlets for batteries: 2
Auxiliary load current output: 3 A
Battery capacity range: 50-250 Ah
Rated input voltage: 230 V (180-265 V), 50/60 Hz

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Product information

Mastervolt Mass 24/25-2 battery charger - 40020256

The Mastervolt Mass 24/25-2 battery charger is designed for the toughest conditions in professional, semi-professional and recreational applications. Even in the most extreme conditions, the Mass series products work perfectly to provide you with uninterrupted performance whenever needed.

The sustainability and technologies behind the Mass concept have been extensively proven in practice. With a mean time between failures (MTBF) of 180,000 hours at full capacity and uninterrupted use, Mass products are the ideal solution for the toughest applications and for any situation requiring a reliable power supply.

Mastervolt Mass 24/25-2 battery charger features

  • Designed for the toughest conditions
  • Lightweight anodized aluminum and stainless steel housing.
  • The coating of the internal components prevents damage caused by moisture or condensation to ensure a longer service life.
  • Insensitivity to the electromagnetic effects of other devices.
  • Suitable for all types of batteries; charges even fully discharged batteries.
  • Supplied with temperature sensor as standard.
  • Full power at temperatures up to 45 ˚C.
  • Load capacities from 80 to 1,000 Ah or higher.
  • Stable and ripple-free power supply, even without batteries.
  • The Current Control function prevents fuses from blowing even when a voltage drop occurs.
  • Possibility of parallel switching by means of multiple battery chargers.
  • Connections in accordance with CE, ABYC A-31 and IEC60945.
  • GMDSS models and panels available.
  • RRR and RMRS certified (except for model 24/75 120 V).
  • Norwegian DNV GL certificate (only for models 24/25, 24/50, 24/75, 24/75 [120 V] and 24/100).

For professional use: GMDSS

The Mass series is designed for the most demanding situations. To comply with SOLAS (International Convention for the Safety of Life at Sea), all Mass battery chargers are compatible with the GMDSS system. GMDSS stands for Global Maritime Distress and Safety System and allows users to monitor various alarm functions.

GMDSS versions of Mass 24/25 DNV, Mass 24/50, Mass 24/75, Mass 24/100 and Mass 24/100-3ph are available.

Independent remote panel compatible with all Mass battery chargers.

Front display with remote panel GMDSS for:

  • Mass 24/25-2 DNV
  • Mass 24/50-2
  • Mass 24/75, Mass 24/100, Mass 24/100-3ph

Charging Lithium Ion Batteries

Although lithium-ion batteries are becoming increasingly popular, the charging process may not be entirely clear. This is not a problem for Mastervolt, as Mastervolt battery chargers communicate directly with the lithium-ion battery via the integrated MasterBus.

MasterBus compatible

Mass battery chargers can be easily connected to a MasterBus network with a single cable and a single connection. In addition, you have the option of central, local or remote monitoring, configuration and control of your system.

Robust construction through intelligent design

Mass certified battery chargers are extremely rugged, designed to withstand intense vibrations and impacts. Their superior quality components meet the most stringent specifications, while the intelligent and extremely robust assembly contributes to a professional end result.

Mastervolt Mass 24/25-2 battery charger data sheet

See Mastervolt Mass 24/25-2 Battery Charger datasheet

Additional information

Weight4 kg
Dimensions35 × 25 × 15 cm

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Delivery times

At we have stock of the references with the highest rotation, however our catalog is so wide and economical because with many of the references we work under order. This means that the delivery time can be extended for 1-2 weeks + subsequent shipment by us. Thanks to this we can offer super competitive and attractive prices to the customer difficult to match. If you wish, you can write us to the chat on the page, call us at 968 97 83 01 or write to us at to check if we have stock or the delivery time of the component you wish to purchase before finalizing the order.