Lítium-ion akkumulátor MLI Ultra 12/6000

This battery uses Lithium Iron Phosphate (LiFePO4) technology. It is the safest lithium chemistry available on the market, providing excellent thermal stability, a very long lifespan, and up to 70 % weight and space savings compared to traditional lead-acid batteries.

The MLI Ultra 12/6000 provides a nominal voltage of 12 V, an impressive capacity of 460 Ah, and a total nominal energy of 6000 Wh. It is ideal for onboard systems with high power consumption.

The battery weighs 46.7 kg. Its overall dimensions, including terminals and handles, are 622 x 197 x 355 mm (Length x Width x Height).

The battery is designed to provide approximately 3,500 cycles at a depth of discharge (DoD) of 80% and an ambient temperature of 25 °C. This ensures exceptional longevity for your service battery bank.

Yes, parallel connection is unlimited. This allows you to significantly increase the total capacity of your battery bank according to your boat's specific needs.

Yes, you can connect up to 10 batteries in series. However, note that for systems exceeding 48 V, a separate battery box must be provided to prevent accidental access to high-voltage components.

The battery's electronic enclosure has an IP65 protection rating, ensuring resistance to dust and water splashes, making it perfectly suited for demanding marine environments.

The battery supports a maximum charging current of 460 A. However, to optimize its lifespan and performance, Mastervolt recommends a charging current of 160 A or less.

The recommended continuous discharge current is 300 A (with a maximum of 500 A for 20 minutes at 25 °C). It can also supply an impressive peak current of 1800 A for 10 seconds, ideal for starting heavy-duty equipment such as thrusters.

The MLI Ultra 12/6000 integrates seamlessly with modern systems thanks to its native compatibility with MasterBus, CZone, and NMEA 2000 protocols. This enables centralized energy monitoring and management on your bridge displays.

Yes, this is mandatory. An external safety relay (such as part number 7700B-BSS) must be added to the installation. The Battery Management System (BMS) will control this relay to disconnect the battery in case of a major risk (overvoltage, undervoltage, etc.).

Yes, the battery is equipped with an advanced integrated Battery Management System (BMS). It provides active cell balancing and continuously monitors the voltage, current, and temperature of each cell to ensure optimal safety.

It is strongly recommended to install the battery in an upright position. However, if space constraints require it, it can also be mounted lying on one of its longer sides.

The battery is fitted with M8 bolt terminals. This standard ensures robust and secure clamping of power cables, essential for handling the high currents required on board.

The Ultra 12/6000 can operate within a service temperature range of -25 °C to 50 °C. For optimal performance and maximum lifespan, an ambient temperature around 25 °C is ideal.

Yes, the integrated BMS continuously monitors cell temperature. It will trigger alarms or cut the safety relay in case of overtemperature or temperatures too low for charging, protecting the system's integrity.

Although LiFePO4 technology does not emit toxic gases like lead-acid batteries, the installation manual recommends placing the device in a well-ventilated area to effectively dissipate the heat generated during high-current charge and discharge cycles.

Absolutely. With its large 6000 Wh capacity and its ability to handle very high charge and discharge currents, the MLI Ultra 12/6000 is specifically designed to be the core of the main battery bank for large marine units and highly demanding systems.

If the battery voltage or that of an individual cell drops too low (below 11 V or 12.5 V depending on alarm settings), the BMS will trigger a low-voltage alarm. If the condition persists, it will command the safety relay to open to prevent destructive deep discharge.

Thanks to its MasterBus, CZone or NMEA 2000 connections, you can monitor state of charge (SoC), voltage, temperature and remaining time directly on a compatible display, such as a dedicated Mastervolt screen or your multifunction chartplotter.