Nabíječka Mass 24/50-2

The Mass 24/50-2 from Mastervolt is a professional battery charger designed for the most demanding marine and mobile environments. It delivers a charging current of 50A at a voltage of 24V and uses a three-stage automatic charging process to ensure fast and safe recharging of your battery banks.

This model has two separate outputs:

A primary 50A output dedicated to charging the house battery bank. A secondary 3A output specifically for maintaining the starter battery.

The Mass 24/50-2 charger is highly versatile. It is fully compatible with the following battery technologies:

Flooded lead-acidGelAGMLithium-ion

This charger has an IP23 protection rating. This means it is protected against solid objects larger than 12.5 mm and against rainwater at angles up to 60° from vertical, making it suitable for indoor installation in a marine environment.

Installation must meet several criteria for optimal operation:

It must be mounted vertically, with connection cables facing downward. The space must be well-ventilated and protected from excessive humidity. It must never be installed directly above batteries to avoid corrosive gas emissions.

Yes, the charger comes standard with a temperature probe equipped with a 6-meter cable. This probe adjusts the charging voltage automatically based on the battery temperature, optimizing its lifespan.

Yes, it is fully compatible with the MasterBus communication network. This allows you to configure, monitor, and control the charger centrally from a compatible display. A MasterBus terminator is also included in the box.

The charger operates on standard 230V alternating current (AC) power, with a frequency between 50 and 60 Hz.

The charger features advanced thermal protection. If the ambient temperature exceeds 40°C, the device automatically reduces its charging power (derating) to protect its internal electronic components and prevent overheating.

No, it is strongly advised not to install the charger in the same enclosed compartment as the batteries. Lead-acid batteries generate potentially explosive and corrosive gases during charging, which could damage the charger's electronics.

The charger alone has a net weight of 4.6 kg. With its complete packaging, the total weight is approximately 6.8 kg.

To ensure sufficient airflow and proper cooling, a minimum clearance of 10 cm must be maintained all around the charger.

The front panel of the charger is equipped with LED indicators. These lights let you know in real time the device's operating status and the current phase of the charging process (Bulk, Absorption, Float).

The 3-step+ process is an automatic charging algorithm developed by Mastervolt. It comprises three main phases:

Bulk: Fast charging at maximum current. Absorption: Full charge at constant voltage. Float: Maintenance voltage to keep the battery at 100% without damage.

The charger is designed to be permanently connected to AC and DC electrical systems. Installation and wiring must be carried out by a technician or qualified electrician, in compliance with local regulations.

The charger uses an active ventilation system to cool its internal components. The fan may produce a slight noise when operating at full power, but its speed automatically adjusts to the device's cooling needs.

Yes, this is mandatory for safety reasons. The charger must be connected to a ground conductor via the dedicated terminal on the AC input to prevent any risk of electric shock.

When you receive your product, the box contains the following items:

Mass 24/50-2 battery chargerA temperature sensor with 6 meters of cableA MasterBus terminatorUser manual and installation guide