Victron Energy – 48V/100Ah Lithium LiFePO4 NG Battery | BAT548110620

The Victron Energy Lithium NG LFP-51.2/100 is a 51.2V 100Ah Lithium Iron Phosphate (LiFePO4/LFP) battery with 5120Wh of nominal energy. It features an integrated shunt, cell balancing and cell monitoring, allowing battery voltage, current and temperature data to be transmitted to the required BMS for state-of-charge calculation, monitoring, warnings and alarms.

The Lithium NG series is designed for use with the Lynx Smart BMS NG 500A or 1000A with M10 busbars, which must be purchased separately. Battery monitoring and control can be performed through VictronConnect, a GX communication centre or the VRM Portal. The BMS automatically manages battery parameters, detects system configuration and updates battery firmware.

Key Specifications

• Product – LFP-51.2/100
• Part Number – BAT548110620
• Battery Chemistry – Lithium Iron Phosphate (LiFePO4 / LFP)
• Nominal Voltage – 51.2V
• Nominal Capacity @ 25°C – 100Ah
• Nominal Energy @ 25°C – 5120Wh
• Capacity Loss – <1% per 100 cycles @ 25°C, 100% DoD
• Energy Loss – <1% per 100 cycles @ 25°C, 100% DoD
• Round-Trip Efficiency – 92%
• Discharge Current for Round-Trip Efficiency Rating – ≤1C

• Cycle Life @ 80% DoD – 2,500 cycles
• Cycle Life @ 70% DoD – 3,000 cycles
• Cycle Life @ 50% DoD – 5,000 cycles
• Cycle-Life Capacity Criterion – ≥80% of nominal capacity

• Maximum Continuous Discharge Current – 100A (1C)
• Maximum Pulse Discharge Current, 10 Seconds – 200A (2C)
• End-of-Discharge Voltage – 44.8V
• Internal Resistance – 8mΩ

• Charge Voltage – 56.0V to 56.8V
• Float Voltage – 54V
• Maximum Continuous Charge Current – 100A (1C)
• Maximum Pulse Charge Current, 10 Seconds – 200A (2C)

Battery Management & Monitoring

• Required BMS – Lynx Smart BMS NG 500A or 1000A with M10 busbars, purchased separately
• Integrated Shunt – Yes
• Cell Balancing – Integrated
• Cell Monitoring – Integrated
• Cell Measurements – Cell voltages and temperatures, battery current
• Battery BMS Interface – Male + female cable with M8 circular connector and high-speed digital communication, 50cm length
• Extension Cables – M8 extension cables available separately in lengths from 1m to 5m
• Alarm Feature – Pre-alarm contact on BMS
• Bluetooth – In the BMS
• Maximum Batteries per BMS – 50
• Maximum Energy per BMS – 384kWh, as specified for the Lithium NG range
• Battery Firmware Updates – Battery firmware automatically updated by BMS
• Repairable – Yes; cover can be removed with screws
• BMS Parallel Capability – Up to 5 BMS units can be paralleled

The BMS is designed to:
• Generate a pre-alarm when the voltage of a battery cell decreases below 3.0V
• Disconnect or shut down the load when the voltage of a battery cell decreases below 2.8V
• Stop charging when a battery cell voltage increases above 3.6V or when battery temperature becomes too high or too low

System Configuration

• Series Connection – Supported by the Lithium NG range
• Parallel Connection – Supported by the Lithium NG range
• Series/Parallel Connection – Supported by the Lithium NG range
• Maximum Number of Batteries in One System – 50
• System Bank Voltages Listed by Victron – 12V, 24V or 48V

Operating Conditions

• Discharge Operating Temperature – -20°C to +50°C
• Charge Operating Temperature – +5°C to +50°C
• Storage Temperature – -45°C to +70°C
• Maximum Humidity – 95%, non-condensing
• Protection Class – IP65
• Self-Discharge Rate – ≤3% per month @ 25°C according to the specification table

Spec Sheet Note: The feature overview states a maximum self-discharge rate of 2% of battery capacity per month, while the specification table states ≤3% per month @ 25°C. The value above follows the product specification table rather than assuming which figure supersedes the other.

Mounting & Physical Specifications

• Mounting Options – Strap or mounting brackets
• Side Mounting – Yes
• Mounting Position – Upright or on its side; must not be mounted with battery terminals facing down
• Power Connection – M8 threaded inserts and bolts
• Dimensions (h × w × d) – 235 × 648 × 162mm
• Weight – 37kg

Standards

• Cell Safety – UL1973, UL9540A and IEC62619 – all three pending
• Battery Safety – IEC62619 (pending)
• EMC – EN 61000-6-3, EN 61000-6-2
• Automotive – ECE R10-6 (pending)
• Performance – IEC62620 (pending)