Mastervolt MLI Ultra 12/6000 Lithium-Ion Battery
The Mastervolt MLI Ultra 12/6000 is a high-capacity 460Ah lithium-iron-phosphate battery storing approximately 6.0kWh of nominal energy for power-intensive marine house banks. Integrated battery management, self-learning balancing, and MasterBus, CZone, and NMEA 2000 communication provide detailed monitoring and charging coordination. With 300A maximum continuous discharge and 1800A peak capability for 10 seconds, it is intended for carefully engineered high-load installations. Mastervolt specifies a mandatory external safety relay, and its IP65 rating applies to the electronics compartment rather than the entire battery.
- 460Ah / 6,000Wh LiFePO4 energy storage
- Integrated BMS, state-of-charge monitoring, and cell balancing
- CZone, NMEA 2000, and MasterBus integration
- 300A continuous discharge and 1,800A peak for 10 seconds
- External safety relay is mandatory; electronics cabinet rated IP65
Manufacturer | Mastervolt |
Category | Batteries |
Item Number | 66016000 |
Series | MLI Lithium Ion Series |
Protections/ Certifications | UN38.3 designed/tested; CE; E-Mark; FCC; IP65 electronics enclosure; UL1642 applies to cells only; RVIA compliant |
Connection/Terminal | M8 threaded |
Dimensions | 622 × 197 × 355 mm (24.5 × 7.8 × 14.0 in) |
Weight | 46.7 kg (103.0 lb) |
Material | Lithium iron phosphate (LiFePO4) |
Voltage Type | DC |
Nominal Voltage | 12 V |
Capacity | 460 Ah / 6,000 Wh |
AMPS/Current Rating | Max. charge: 460 A; continuous discharge: 300 A |
Spec Sheet | View Manufacturer Spec Sheet |
- Chemistry: lithium iron phosphate (LiFePO4)
- Nominal voltage: 12V
- Capacity: 460Ah / 6,000Wh
- Maximum charging current: 460A (recommended 160A or less)
- Maximum continuous discharge current: 300A
- Peak discharge: 1,800A for 10 seconds
- Communications: MasterBus, CZone, NMEA 2000
- BMS and monitoring: integrated
- External safety relay: mandatory
- Protection: IP65 (electronics cabinet)
- Terminals: M8
- Dimensions (L × W × H): 622 × 197 × 355 mm (24.5 × 7.8 × 14.0 in)
- Weight: 46.7 kg (103.0 lb)
- Cycle life: 3,500 cycles at 80% DOD under stated manufacturer conditions
Price rounded to $6,849.47 from $6,849.465 in retail export. Manufacturer uses this MLI Ultra family photograph on the 12/6000 product page.
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