Mastervolt MLI Ultra 12/3000 baterija

The MLI Ultra 12/3000 is a Lithium Iron Phosphate (LiFePO4) battery designed for marine and mobile environments. It provides a nominal voltage of 12 V, a capacity of 230 Ah (approximately 3000 Wh of energy), and stands out for its high energy density.

This battery is very compact for its capacity. It weighs 25.4 kg and its maximum external dimensions (including terminals and handles) are 341 x 197 x 355 mm.

It offers excellent longevity with approximately 3500 cycles at a depth of discharge (DOD) of 80% and an ambient temperature of 25 °C.

Yes, it is strictly mandatory. The system requires installation of an external safety relay (not included, product code 7700B-BSS) directly controlled by the battery to isolate the circuit in case of a critical event such as overvoltage or overheating.

The battery should be installed in an upright position. However, its design also allows for installation on one of its long sides if space constraints require it.

Yes, the integrated battery management system allows connecting an unlimited number of batteries in parallel to increase the total capacity of your house bank.

Yes, you can connect up to 10 batteries in series. Note: for systems exceeding 48 V, a separate battery box is required to prevent access to high-voltage components.

Although the battery accepts a maximum charging current of 230 A, it is recommended to charge at 80 A or less to maximize longevity and achieve the specified number of cycles.

The battery can deliver a continuous discharge current up to 200 A. It can also provide peak currents reaching 1800 A for 10 seconds to start demanding equipment.

The integrated active BMS continuously monitors internal temperature and balances cell voltages. It communicates with your equipment to prevent dangerous overcharging or deep discharging.

The MLI Ultra 12/3000 communicates natively via MasterBus and CZone protocols (NMEA 2000 compatible), enabling seamless integration with your boat's multifunction displays.

Yes, the battery’s electronic housing has an IP65 protection rating, effectively shielding it from dust ingress and water jets.

The battery is designed to operate and be stored in environments ranging from -25 °C to 50 °C. The ideal nominal operating temperature is 25 °C.

The delivery includes the MLI Ultra battery, mounting straps, M8 hardware for the terminals, a MasterBus terminator, a CZone drop cable, and the user manual. The safety relay must be purchased separately.

The battery is fitted with M8 threaded terminals, allowing a robust and secure connection of power cables in your installation.

No, Lithium Iron Phosphate technology has a very low self-discharge rate, less than 3 % per month at an ambient temperature of 20 °C.

If the voltage drops critically, the BMS triggers a safety event (Battery Safety) and sends a signal to open the external safety relay, isolating the battery to prevent irreversible damage.

Activation is done via the DIP switches located under the LED indicator cover. Simply set DIP switch 1 to the ON position using a small flathead screwdriver.

LiFePO4 chemistry is renowned as the safest lithium technology on the market. It provides excellent thermal stability, long service life, and poses no risk of thermal runaway unlike other lithium chemistries.

Yes, but never directly without proper regulation. It is essential to use a lithium-compatible charge regulator (such as Mastervolt's Alpha Pro) or a DC-DC charger (Mac Plus) to protect both the alternator and the battery.