Nabíječka Mass 24/100 (DNG GL)

It is designed for the most demanding professional and commercial marine environments. DNV GL certified, it is built for uninterrupted operation in extreme conditions, unlike standard recreational models.

The Mastervolt Mass charger delivers a powerful 100A DC current at 24V.

This 100A charger is ideal for managing and recharging battery banks of 250 Ah and above.

This charger is highly versatile. It is compatible with the following battery types:

AGM, Gel, Lithium, Traction (via dedicated voltage settings)

This is a smart charging technology developed by Mastervolt ensuring fast and safe charging. For this 24V model, it provides a precise absorption voltage of 28.5V and a float (maintenance) mode at 26.5V.

Yes, exactly. With a voltage ripple strictly maintained below 100mV RMS, it provides clean and stable power to sensitive electronics, even when no backup battery is connected.

It absorbs an input power of 3600W at 230V (50/60 Hz) while maintaining a high power factor (cos phi) of 1.

No, it is equipped with a soft-start system (soft start per IEC 1003-3 standard) that prevents voltage spikes on the vessel’s electrical network or your generator.

Yes, it is fully compatible with the MasterBus communication network, enabling seamless integration with modern supervision systems such as MasterView touchscreens.

Yes, via CZone NMEA 2000 interfaces, the charger can communicate and share its data with other compatible devices on your onboard network.

It is designed for hot environments: it maintains 100% of its output power up to 40°C ambient temperature. Beyond that, it experiences a minimal loss of only 2.5% per additional degree to protect its internal components.

Yes, the device is supplied with its battery temperature probe fitted with a 6-metre cable. It allows the charger to dynamically adjust the charging curve to preserve the lifespan of your batteries.

The charger has an IP23 protection rating. It must be installed in a well-ventilated area, protected from direct rain, steam, and excessive dust.

The unit alone weighs 7.7 kg, thanks to its robust aluminum chassis.

Yes, by using a load distributor to isolate the banks. The charger has a specific setting (via DIP switch) to automatically compensate for the 0.6V voltage drop induced by the distributor.

The LEDs provide real-time information on the charger's status:

Green: Indicates the ongoing cycle (Bulk, Absorption, Float) and the percentage of current delivered.
Red: Signals a fault (e.g., disconnected probe, overheating, voltage fault).

For a secure installation (up to 6 meters long) and a typical input current of 12 to 20A, it is recommended to use a minimum cross-section of 2.5 mm² (AWG 12).

This is a specific mode where the alarm relay only responds to the battery voltage. In this mode, the electronics remain permanently active with a very low power consumption of around 25mA, even when the charger is stopped.

Yes, it includes active cooling. Additionally, it can send a signal via the MasterBus network to automatically trigger an external fan in the engine room when the load reaches 50% or the temperature reaches 50°C.

The DNV GL certification confirms that the product has been tested and approved according to the strictest maritime industry safety and reliability standards, making it suitable for commercial and professional vessels.