Lot of 4 Lithium LiFePO4 12V 640Ah Bluetooth batteries – 32.77 kWh with BMS 250A

Discover the professional anemometer, the ideal tool for accurately measuring wind speed, temperature, and air humidity, both outdoors and indoors. Designed for gardening enthusiasts and professionals, this device offers you complete weather monitoring and graphical forecasts for the next 24 hours. Its compact and modern design fits perfectly into any outdoor or indoor environment.

This lot of 4 Lithium LiFePO4 12V 640Ah Bluetooth batteries is intended for installations requiring very large storage capacity. Each battery has an energy of 8192Wh, for a total reserve of 32,768Wh, approximately 32.77 kWh for the entire lot.

This solution is particularly suitable for standalone solar systems, off-grid installations, highly equipped RVs, boats, cabins, remote sites, or domestic backup systems. Thanks to LiFePO4 technology, the integrated 250A BMS on each battery, and Bluetooth monitoring, this pack offers a powerful, durable, and scalable storage base.

A very large capacity storage pack

With four 12.8V 640Ah batteries, this lot allows for creating an installation in 12V, 24V, or 48V depending on the chosen wiring and equipment used. It is suitable for projects where energy autonomy is a priority.

• Composition: 4 LiFePO4 12V 640Ah Bluetooth batteries
• Battery energy: 8192Wh
• Total pack energy: 32,768Wh, or approximately 32.77 kWh
• Technology: Lithium Iron Phosphate LiFePO4
• Integrated BMS: 250A on each battery
• Monitoring: Bluetooth with compatible mobile app
• Commercial warranty: 2 years

Possible configurations with 4 batteries

The pack of 4 batteries allows for several types of assembly depending on the desired voltage, the sought autonomy, and the compatibility of the electrical installation.

• 4 batteries in parallel assembly: 12.8V 2560Ah
• 2S2P assembly: 25.6V 1280Ah
• 4 batteries in series assembly: 51.2V 640Ah
• Total available energy: approximately 32.77 kWh in each configuration
• 12V usage: maximum autonomy for low voltage equipment or compatible 12V converter
• 24V usage: best compromise between voltage, current, and capacity
• 48V usage: recommended for powerful installations with compatible converter or inverter

Independent Bluetooth monitoring on each battery

Each battery in the pack has Bluetooth tracking allowing you to view the main data from a compatible app. This facilitates charge status control and autonomy management, especially in large installations.

• Checking the charge level
• Voltage tracking of each battery
• Reading of charge or discharge current
• Operating temperature control
• Monitoring the general condition of each battery
• Better visibility on remaining energy

Integrated 250A BMS on each battery

Each battery is equipped with a 250A BMS management system. This device helps secure the use of the pack by monitoring essential parameters during charging, discharging, and prolonged use.

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

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

Complete batch characteristics

• Number of batteries: 4
• Total energy: 32,768Wh
• Total capacity in parallel: 12.8V 2560Ah
• Possible configuration in 24V: 25.6V 1280Ah
• Possible configuration in 48V: 51.2V 640Ah
• Indicative total weight: approximately 203 kg
• Total weight with tolerance: approximately 203 kg ± 2 kg
• Terminals: M8 on each battery
• Protection: IP65 on each battery

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 LiFePO4 compatible charger, solar regulator, or DC-DC charger
• Adjust the charging voltage to the selected setup: 12V, 24V, or 48V

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
• Suitable for extended use with powerful equipment, depending on the converter and wiring installed

Usage and storage conditions

• Charging temperature: 0°C to 45°C
• Discharge temperature: -20°C to 65°C
• Storage temperature: -20°C to 45°C
• Ingress protection: IP65
• Recommended installation in a ventilated, protected, and accessible space
• Do not immerse the batteries despite their protection rating

Recommended uses

• High-capacity standalone solar installation
• Off-grid home storage system
• Backup power supply for home or remote site
• Camper van or converted vehicle with high electrical consumption
• Boat and auxiliary marine applications
• Cabin, hut, isolated workshop or shelter
• Hybrid solar, wind, or generator system with compatible charge
• 48V installation with suitable converter or inverter

Advantages of the set of 4 batteries

• Very high total energy reserve: approximately 32.77 kWh
• Possible assembly in 12V, 24V, or 48V as needed
• Four independent 250A BMS to protect each battery
• Bluetooth monitoring on each unit
• Stable, durable, and maintenance-free LiFePO4 technology
• Announced lifespan of 6000 cycles at 80% depth of discharge
• Low self-discharge, convenient for seasonal use
• M8 terminals suitable for power wiring
• ABS casing with IP65 protection
• Solution suitable for long-term energy autonomy projects

Installation tips

• Fully charge the 4 batteries before the first assembly
• Ensure the batteries have a similar voltage before connection
• Use only identical batteries in the same set
• Provide cables with a section suitable for the current and the length of the installation
• Install properly sized fuses or circuit breakers
• Check the compatibility of the charger, solar regulator, converter, or inverter
• Do not mix these batteries with lead batteries or other capacities
• Avoid charging when the temperature is below 0°C
• Do not use as engine starter batteries
• Securely fasten the batteries in a vehicle, boat, or mobile installation

The set of 4 LiFePO4 12V 640Ah Bluetooth batteries offers a total capacity of 32,768Wh, or approximately 32.77 kWh. Thanks to the 250A BMS integrated into each battery, M8 terminals, Bluetooth monitoring, IP65 rating, and LiFePO4 technology, this pack constitutes a powerful energy storage solution for solar installations, remote sites, RVs, boats, and backup systems requiring high autonomy.

Warranty

This set of 4 LiFePO4 12V 640Ah Bluetooth batteries is covered by a 2-year commercial warranty. The warranty applies within the framework of a compliant installation, suitable wiring, and adherence to charge, discharge, temperature, and usage limits.

HUM / 15885