SKU:
EX 66011250
€ 1.986,88
1-2 weeks delivery time
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The Mastervolt 66011250 - MLI Ultra 12/1250 is a heavy-duty 12V lithium battery offering 1250 Wh of energy and a continuous discharge current of 200A. Engineered with LiFePO4 chemistry, it integrates a proprietary BMS, intelligent safety relay, thermal heat-pad for cold weather, and full MasterBus/CZone/NMEA2000 communication support. With a compact Group 31 footprint, IP65 waterproof housing, and a 3500-cycle life at 80% DoD, it’s ideal for high-demand marine and mobile systems. Dimensions: 330 x 173 x 210 mm. Weight: 15 kg.
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Mastervolt 66011250 - MLI Ultra 12/1250 Lithium Battery 12V 100Ah – IP65, High Current, Fast Charging, Integrated BMS
The Mastervolt MLI Ultra 12/1250 (Part No. 66011250) is a cutting-edge 12V Lithium Iron Phosphate (LiFePO4) battery engineered for extreme performance, safety, and longevity. Designed to endure harsh environments, it integrates advanced features such as an intelligent Battery Management System (BMS), self-learning cell balancing, cold-temperature charging with an internal heat pad, and real-time communication through MasterBus, NMEA2000, and CZone protocols. This unit delivers high power output, rapid charging, and over 3500 cycles at 80% depth of discharge.
Key Features:
- Heavy-duty LiFePO4 battery with 1250 Wh capacity (100 Ah @ 12 V)
- More than 3,500 cycles at 80% DoD and 25°C
- Fully waterproof (IP65) and shock-resistant housing
- Integrated thermal heat-pad for charging in freezing conditions
- Integrated battery monitoring and safety relay with auto disconnect
- Peak discharge current up to 500 A (10 sec)
- Self-learning balancing algorithm for optimized cell management
- Drop-in Group 31/Group 49 size replacement
- Series connection up to 48 V, unlimited parallel connection
- MasterBus, CZone, and NMEA2000 compatible for full integration
- Certified to CE, E-Mark, FCC, UN 38.3, UL1973 (compliance-ready)
Typical Applications:
- High-end marine power systems
- Recreational vehicles and expedition systems
- Off-grid energy storage and hybrid installations
- Mission-critical backup and mobile equipment
Technical Specifications:
Specification Value Nominal Voltage 12 V Nominal Capacity 100 Ah Energy Capacity 1250 Wh Cycle Life 3500 cycles @ 80% DoD, 25°C Max Charge Current 100 A Recommended Charge Current ≤ 50 A Max Continuous Discharge 200 A Peak Discharge Current 500 A (10 sec) Battery Chemistry Lithium Iron Phosphate (LiFePO4) Integrated Monitoring Voltage, Current, SOC, Time Remaining Communication MasterBus, NMEA2000, CZone Protection Features Over/under voltage, over-temp, integrated safety relay Ingress Protection IP65 (waterproof) Mounting Position Upright (recommended) or long side Terminals M8 Dimensions (L × W × H) 330 x 173 x 210 mm / 13.0 x 6.8 x 8.3 in Weight 15 kg / 33.1 lb Shipping Weight 17.2 kg / 37.9 lb Certifications CE, E-Mark, UN38.3, FCC, UL1642 (cells), UL1973 compliant -
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