Set of 2 Lithium LiFePO4 12V 640Ah Bluetooth batteries – 16.38 kWh with BMS 250A

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This set of 2 Lithium LiFePO4 12V 640Ah Bluetooth batteries is designed for installations requiring a very large energy reserve. Each battery offers a capacity of 8192Wh, for a total capacity of 16,384Wh for the complete set.

Ideal for standalone solar systems, motorhomes, boats, off-grid installations, isolated sites, or home backup solutions, this pack provides a powerful, scalable, and durable storage base.

A high-capacity pack for enhanced autonomy

With two 12.8V 640Ah batteries, this set provides a significant energy reserve to power 12V equipment, a 12V/230V converter, or a more complete installation depending on the chosen setup.

• Complete set: 2 LiFePO4 12V 640Ah batteries
• Battery energy: 8192Wh
• Total energy of the set: 16,384Wh, approximately 16.38 kWh
• Total capacity in parallel: 12.8V 1280Ah
• Possible series configuration: 25.6V 640Ah
• Technology: Lithium Iron Phosphate LiFePO4

Two batteries with Bluetooth monitoring

Each battery includes a Bluetooth function allowing you to monitor key information from a compatible mobile app. This monitoring facilitates autonomy management and operational status control.

• Charge level control
• Reading the voltage of each battery
• Monitoring the charging or discharging current
• Temperature monitoring
• Control of the overall operating condition
• More precise management of the available energy reserve

Integrated 250A BMS on each battery

Each battery has its own BMS 250A. This management system protects the cells and ensures safe use during charging, discharging, or intensive use phases.

• BMS per battery: 250A
• Maximum continuous charging current per battery: 250A
• Maximum continuous discharging current per battery: 250A
• Recommended discharging current per battery: 200A
• Overcharge protection
• Excessive discharge protection
• Overcurrent protection
• Protection against abnormal temperatures
• Protection against short circuits

Parallel or series assembly depending on the installation

The set can be used to increase capacity in 12V or to create a 24V installation, depending on the needs and the equipment used.

• Parallel assembly: 12.8V 1280Ah, ideal for increasing 12V autonomy
• Series assembly: 25.6V 640Ah, suitable for 24V compatible installations
• Total energy in both cases: approximately 16.38 kWh
• Discharge cut-off voltage: 10V per battery
• Use only identical batteries, at the same charge level
• Provide cables, fuses, and protections suitable for the current used

Technical characteristics per battery

• Case: ABS plastic
• Dimensions: 635 x 244 x 218 mm
• Weight: 50.75 kg ± 0.5 kg
• Nominal voltage: 12.8V
• Nominal capacity: 640Ah
• Energy: 8192Wh
• Terminal: M8
• Life cycle: 6000 cycles at 80% depth of discharge
• Self-discharge: ≤ 3% per month
• Charge efficiency: 100% at 0.2C
• Discharge efficiency: 96 to 99% at 0.5C
• Protection rating: IP65

Charging data per battery

• Charging voltage: 14.4V ± 0.2V
• Charging mode: CV
• Recommended charging current: 128A
• Maximum continuous charging current: 250A
• Charging temperature: 0°C to 45°C
• Use a charger or regulator compatible with LiFePO4 batteries

Discharge data per battery

• Recommended discharge current: 200A
• Maximum continuous discharge current: 250A
• Discharge cut-off voltage: 10V
• Discharge temperature: -20°C to 65°C
• Adapted for applications requiring stable and prolonged power supply

Storage and environmental conditions

• Charging temperature: 0°C to 45°C
• Discharge temperature: -20°C to 65°C
• Storage temperature: -20°C to 45°C
• Protection: IP65 against dust and water jets
• Recommended installation in a protected, ventilated, and accessible location

Recommended applications

• Camper van and converted van with great electrical autonomy
• Boat and auxiliary marine installation
• Isolated site with solar panels
• Energy storage for autonomous housing
• Backup system in case of power outage
• 12V or 24V installation depending on the chosen setup
• 12V/230V or 24V/230V inverter power supply compatible

Advantages of the 2-battery pack

• Very large energy reserve: 16.38 kWh in total
• Two independent batteries with integrated 250A BMS
• Bluetooth monitoring on each battery
• Possibility of parallel or series mounting
• Durable and stable LiFePO4 technology
• Up to 6000 cycles at 80% depth of discharge
• Low self-discharge, ideal for seasonal installations
• Robust M8 terminals for power wiring
• IP65 rating for better resistance to demanding environments

Installation tips

• Fully charge both batteries before connecting in series or parallel
• Use cables with a cross-section suitable for the current and length of the installation
• Install a fuse or circuit breaker as close as possible to the positive terminal
• Check the compatibility of the charger, solar regulator, and inverter
• Do not mix with lead batteries or batteries of another capacity
• Do not use as an engine starter battery
• Avoid charging when the temperature is below 0°C
• Ensure a solid mounting in a vehicle, boat, or mobile installation

This set of 2 LiFePO4 12V 640Ah Bluetooth batteries offers a total capacity of 16,384Wh. Thanks to lithium iron phosphate technology, the integrated 250A BMS on each battery, M8 terminals, and Bluetooth monitoring, it provides a high-performance solution for solar installations, motorhomes, boats, remote sites, and backup systems requiring high energy autonomy.

Warranty

This battery set is covered by a 2-year commercial warranty, subject to proper installation, correctly sized wiring, and adherence to charge, discharge, and temperature limits.

HUM / 15884