MultiPlus 24/3000/70-16

The Victron Energy MultiPlus 24/3000/70-16 is a versatile inverter-charger. It combines a pure sine wave inverter of 3000 VA, a sophisticated 70 A battery charger with adaptive charging technology, and a fast 16 A AC transfer switch in a compact unit. It is designed for efficient energy management and continuous power supply in marine, mobile, or off-grid systems.

The MultiPlus 24/3000/70-16 inverter/charger delivers a continuous power output of 3000 VA. It can also handle a peak power of 6000 W. The output voltage is 230 V AC at 50 Hz, with a maximum efficiency of 93–94%.

The MultiPlus 24/3000/70-16 integrates a 70 A battery charger. It uses a four-stage adaptive charging algorithm (bulk – absorption – float – storage) that intelligently adjusts to the battery's condition to prevent overcharging and extend its lifespan.

This MultiPlus model is specifically designed to operate with a 24 V battery system.

The MultiPlus 24/3000/70-16 features a 16 A fast AC transfer switch. This function ensures uninterrupted AC power (UPS function). In the event of a grid or generator failure, it automatically switches to the inverter in less than 20 milliseconds, guaranteeing continuous power for sensitive equipment.

The PowerControl function optimizes the management of limited AC sources. It automatically reduces the battery charging current to prevent overloading the generators or shore power connections, taking into account other power consumers.

The PowerAssist function is a unique feature that supplements the capacity of a limited AC source (such as a generator or a low-amp shore power connection). During peak demand, the MultiPlus adds inverter power from the battery. When the load decreases, excess energy is used to recharge the battery, allowing high-power devices to be used even with limited power supply.

Yes, this MultiPlus has two AC outputs:

A main output with "no-break" function (uninterrupted power supply).A second auxiliary output that is active only when AC power is available. This output is ideal for non-priority loads, such as an electric water heater, which should only operate if the generator is running or if shore power is connected.

Yes, it is possible to configure three MultiPlus 24/3000/70-16 units for a three-phase output. Additionally, up to 6 sets of three units can be connected in parallel to provide an inverter output of up to 45 kW / 54 kVA and a charging capacity of over 1000 A.

The MultiPlus uses a four-stage adaptive charging algorithm: bulk (rapid charge), absorption, float (trickle charge), and storage. This microprocessor-controlled battery management system intelligently adjusts to the battery's state to optimize the charging process and extend battery life.

The BatterySafe mode is a function that prevents damage caused by excessive gas release. If a high charging current is combined with a high absorption voltage to charge a battery quickly, the MultiPlus automatically limits the rate of voltage increase once the gassing voltage has been reached.

The storage mode activates when the battery has not been discharged for 24 hours. In this mode, the float voltage is reduced to 2.2 V/cell (13.2 V for a 12 V battery) to minimize gassing and positive plate corrosion. Once a week, the voltage is raised to the absorption level to "equalize" the battery, preventing electrolyte stratification and sulfation, which are major causes of early battery failure.

Yes, a temperature sensor is included with the product. It reduces the charging voltage when the battery temperature rises. This feature is particularly important for maintenance-free batteries, which could otherwise dry out due to overcharging, and helps extend their lifespan.

The voltage sense function compensates for voltage drop caused by the resistance of the connection cables. By measuring the voltage directly on the DC bus or at the battery terminals, the MultiPlus ensures the correct charging voltage is applied to the battery, guaranteeing optimal charging.

Yes, models with a 16 A transfer capacity, such as the MultiPlus 24/3000/70-16, are equipped with a programmable relay. By default, it is configured as an alarm relay, but it can be programmed for various other applications, such as automatic generator start-up.

Yes, MultiPlus models with a 16 A transfer capacity, like this one, are equipped with a programmable analog/digital input/output port. These ports can be used for various purposes, including communication with the BMS (Battery Management System) of a lithium-ion battery.

For correct installation, it is important to ensure the equipment is used under appropriate operating conditions. Never use it in a humid or dusty environment. It is also essential to provide sufficient free space around the product for ventilation and to ensure that ventilation openings are not blocked. Install the product in a heat-resistant environment, away from chemicals, plastics, curtains, or other textiles.

It is crucial to read the provided documentation carefully. The product is used in combination with a permanent power source (battery), which means a dangerous electrical voltage may be present at the input and/or output terminals even when the equipment is off. Always disconnect the AC power and the battery before performing any maintenance. The product is a Class I safety device and its AC input and/or output terminals must have an uninterrupted ground connection. All maintenance must be carried out by qualified personnel.

The MultiPlus is supplied ready for use. However, some of its functions can be adjusted:

The most important settings can be modified simply using DIP switches. All settings, except for the multifunctional relay, can be adjusted with a VE.Net panel. All settings can be modified using a PC and free software downloadable from the Victron Energy website.

Yes, the MultiPlus 24/3000/70-16 is extremely well-suited for solar energy applications. It can be used in both standalone systems and grid-tied systems. It can use excess solar energy to recharge batteries, and in case of a grid failure, it can replace the grid to power essential equipment. It also includes a frequency shift function to interact with solar inverters.