Baterie MLI Ultra Lithium 12 V 1,25 kWh

The Mastervolt MLI Ultra Lithium 12/1250 battery has a nominal capacity of 100 Ah and a nominal energy of 1250 Wh (1.25 kWh). It is designed to provide significant power for your marine applications.

The MLI Ultra 12/1250 battery uses Lithium Iron Phosphate (LiFePO4) technology. This chemistry is known for its safety, long lifespan, and robustness, even in demanding conditions.

The Mastervolt MLI Ultra 12/1250 battery weighs 15 kg (33.1 lbs). This reduced weight, compared to traditional batteries, allows for space and weight savings of up to 70%.

Yes, the MLI Ultra 12/1250 battery is fully waterproof and has an IP65 protection rating. This means it is protected against dust and low-pressure water jets, making it ideal for marine environments.

The Ultra 12/1250 AGM battery is designed to deliver 3,500 cycles at an ambient temperature of 25 °C with a depth of discharge (DoD) set at 80 %.

The sophisticated BMS of the MLI Ultra 12/1250 ensures optimal use of each individual cell through a predictive self-balancing algorithm. This system provides:

Faster and more efficient charging cycles.Extended battery lifespan.Protection against overvoltage, undervoltage, overcurrent, and overheating.An integrated safety switch that disconnects cells in case of anomalies.

Yes, the MLI Ultra 12/1250 battery is equipped with an integrated thermal heating pad and intelligent low-temperature control. If the battery temperature drops below 0 °C and a charger is connected, the internal heating activates to keep the cell temperature above freezing (up to 5 °C), allowing optimal charging even in cold weather.

Yes, the MLI Ultra 12/1250 lithium battery is designed as a direct replacement for traditional Group 31 and Group 49 (85-90 Ah) lead-acid batteries, delivering superior performance and a lifespan more than three times longer.

The dimensions of the MLI Ultra 12/1250 battery (with terminals and handles) are 330 x 173 x 210 mm (Length x Width x Height).

The MLI Ultra 12/1250 battery pack includes the following items:

1x MLI Ultra battery
2x flat washers
2x spring washers
2x M8 bolts for battery terminal
2x M8 Allen screws for battery terminal
1x thick automotive battery positive terminal
1x thin automotive battery negative terminal
1x MasterBus connector
1x MasterBus cable (1 m)
1x CZone interconnect cable (1 m)
1x 6-pin auxiliary cable (2 m)
2x mounting brackets
1x removable handle
1x quick installation manual

You can mount the MLI Ultra 12/1250 battery in several ways:

Using the mounting brackets (supplied) for fixed applications.Using a long-side retention system (suitable for 49-size battery banks).In a rack or tray.Choose the option that best suits your installation position.

For the MLI Ultra 12/1250 battery, a recommended fuse is 200 A (IR 10 kA). It is mandatory to use an MRBF fuse holder and mount it directly on the battery's positive terminal. The installation process is as follows:

Mount an MRBF fuse holder directly on the battery's positive terminal.Add the fuse.Add the positive cable.Add a flat washer, then a spring washer.Tighten the bolt to the recommended torque.Connect the negative cable to the negative terminal.Never install a fuse directly on the battery terminal without an insulated fuse holder.

The recommended torque for the M8 terminal bolts on the MLI Ultra 12/1250 battery is 14.7 to 19.6 Nm (130 to 170 in lb).

For the MLI Ultra 12/1250 battery, the recommended cable diameters are 70 mm² (AWG 2/0).

The MLI Ultra 12/1250 battery is equipped with a battery switch (safety disconnect):

To turn it off: Press the button for 1 second. The C LED (green) will flash.
To turn it on: Press the button for 5 seconds. The C LED (green) will remain lit for 1 minute.
To check the status: Press the button briefly. The C LED will indicate the status (solid for 'on', flashing for 'off').
If the battery was manually turned off, it must be manually turned back on.

Yes, the MLI Ultra 12/1250 battery can be charged with any lithium-ion-compatible battery charger. It is crucial to ensure the charger complies with the MLI Ultra’s charging parameters. You will need to set the battery type to 'MLI' or configure the 3-step+ charge characteristics (also called luoUo) as follows:

Absorption charge voltage (max. charge): 14.25 VFloat voltage (end of charge): 13.5 V

Yes, the MLI Ultra 12/1250 battery allows parallel and series connections:

Parallel connection: There is no limit to the number of batteries that can be connected in parallel.Series connection: Batteries can be connected in series up to a 48 V system.

The MLI Ultra 12/1250 lithium battery is compatible with several communication systems for full system integration:

MasterBus: For communication with Mastervolt battery chargers and smart remote controls. CZone: Enables integration into a CZone network. NMEA2000: Compatible with NMEA2000 networks for monitoring and control. It also features a 'plug-and-play' function with automatic configuration with compatible Mastervolt chargers.

Advanced Systems Group provides a two-year product warranty on the MLI Ultra Lithium 12/1250 battery, starting from the date of purchase. This warranty is valid provided the product is installed and used in accordance with the manual's instructions.