51.2V 400Ah LiFePO4 Battery for Solar Energy Storage

51.2V 400Ah LiFePO4 Battery for Solar Energy Storage

51.2V 400Ah LiFePO4 Battery is a floor-standing lithium iron phosphate energy storage solution designed for residential solar storage, home backup power, off-grid solar systems, and light commercial energy storage projects. With a nominal energy capacity of 20.48kWh, intelligent BMS protection, and CAN/RS485/RS232 communication, this battery is suitable for solar installers, distributors, system integrators, and project-based energy storage buyers.

The LD 48400 model is built with stable LiFePO4 battery chemistry, offering long cycle life, safer operation, and reliable performance for daily charge and discharge applications. Its floor-standing cabinet structure, sheet metal enclosure, front display area, side handle design, and caster wheels make it suitable for modern energy storage installations where capacity, system compatibility, and long-term reliability are important.

Key Features of 51.2V 400Ah LiFePO4 Battery

• 20.48kWh energy capacity: Designed for residential solar storage, backup power, off-grid systems, and light commercial energy storage applications.
• LiFePO4 battery chemistry: Cobalt-free lithium iron phosphate chemistry provides stable performance and long-term operation.
• Intelligent BMS protection: Supports multiple protection functions, including temperature protection, over-current protection, short-circuit protection, over-charge protection, over-discharge protection, and low-voltage protection.
• CAN / RS485 / RS232 communication: Suitable for integration with solar inverters, hybrid inverter systems, and energy management devices.
• Scalable battery system: Supports up to 15 units in parallel, allowing flexible capacity expansion for different project requirements.
• Max. 200A charge and discharge current: Provides strong current handling capability for energy storage applications.
• Floor-standing cabinet design: Suitable for residential energy storage rooms, utility rooms, and light commercial installation sites.
• Optional smart functions: Optional touch LCD screen, Bluetooth wireless telemetry, iOS/Android app monitoring, self-heating kit, and active fire extinguishing module are available for different project needs.

Reliable Performance for Energy Storage Projects

This 51.2V 400Ah LiFePO4 Battery is designed for stable energy storage performance in solar power systems. With a nominal voltage of 51.2V DC and nominal capacity of 400Ah, it provides 20,480Wh of energy storage capacity. The battery supports a recommended charge current of 100A and a maximum charge current of 200A. For discharge applications, it also supports a recommended discharge current of 100A and a maximum discharge current of 200A.

For system protection and long-term operation, the battery is equipped with an intelligent BMS. The BMS helps monitor battery status and protect the system from common electrical risks during charging and discharging. Protection functions include temperature protection, over-current protection, short-circuit protection, over-charge protection, over-discharge protection, and low-voltage protection.

Communication and Inverter Compatibility

For B2B energy storage projects, communication compatibility is one of the most important purchasing factors. This 51.2V 400Ah LiFePO4 Battery supports CAN, RS485, and RS232 communication protocols, making it easier to connect with solar inverters, hybrid inverter systems, and energy management systems.

The battery can be used in residential solar storage systems, off-grid solar power systems, backup power systems, and small commercial energy storage solutions. For inverter matching, communication protocol configuration, or project-based system design, buyers can contact our technical team before placing bulk orders.

Scalable Design for Parallel Battery Systems

The LD 48400 battery supports up to 15 units in parallel, allowing users to expand total energy storage capacity according to project requirements. This is useful for solar installers, distributors, wholesalers, and system integrators who need flexible battery configurations for different residential or commercial applications.

Compared with a fixed-capacity battery solution, a parallel battery system gives project buyers more flexibility. The system can start with a smaller number of battery units and expand later when higher storage capacity is required. This makes the product suitable for both standard home energy storage systems and customized energy storage projects.

Technical Specifications

Model	LD 48400
Battery Type	LiFePO4 Battery
Nominal Voltage	51.2V DC
Nominal Capacity	400Ah
Nominal Energy	20,480Wh / 20.48kWh
Communication Protocol	CAN / RS485 / RS232
Max. Parallel Connection	15 Units
Cycle Life	6000 Cycles at 25℃, 80% DOD
Recommended Charge Current	100A
Max. Charge Current	200A
Recommended Charge Voltage	58V
Max. Charge Voltage	58.4V
Recommended Discharge Current	100A
Max. Discharge Current	200A
Recommended Discharge Cut-off Voltage	46V
Battery Cut-off Voltage	44V
Battery Recovery Voltage	48V
Product Size	645 × 385 × 815mm
Net Weight	Approx. 200kg
Package Size	715 × 465 × 1170mm
Gross Weight	Approx. 220kg
Protection Rating	IP20
Shell Material	Sheet Metal

Protection and Safety Design

Safety and reliability are essential for lithium battery energy storage systems. This 51.2V 400Ah LiFePO4 Battery is designed with an intelligent BMS that provides multiple protection functions during operation. These protection mechanisms help improve system safety and reduce common electrical risks during long-term energy storage use.

The battery pack certifications include CE, MSDS, and UN38.3. The cell certifications include CE, IEC62619, UL1973, and ROHS. These certification references support international battery shipping, B2B procurement, and energy storage project requirements.

Operating Temperature Range

The battery is designed to work in different energy storage environments. The discharging temperature range is -20℃ to 60℃, while the charging temperature range is 0℃ to 55℃. The storage temperature range is -20℃ to 45℃. For cold-climate projects, a self-heating kit can be selected as an optional configuration.

Applications

This 51.2V 400Ah LiFePO4 Battery can be used in a wide range of energy storage applications, including:

• Residential solar energy storage systems
• Home backup power systems
• Off-grid solar power systems
• Light commercial energy storage projects
• Hybrid inverter battery systems
• Solar installer and system integrator projects
• Distributor and wholesale energy storage solutions
• Multi-unit battery storage expansion systems

Optional Configurations

Different projects may require different battery configurations. This battery can be supplied with optional enhancements such as touch LCD screen, Bluetooth wireless telemetry, iOS/Android app monitoring, self-heating kit, and active fire extinguishing module. These options can help improve user monitoring, cold-weather operation, and project-level safety configuration.

B2B Supply and Project Support

As a B2B energy storage battery product, the LD 48400 is suitable for distributors, solar installers, wholesalers, energy storage solution providers, and system integrators. We support bulk orders, project-based supply, technical communication, OEM/ODM cooperation, and inverter compatibility support.

For energy storage projects, buyers may need support with battery model selection, communication protocol matching, parallel system configuration, packaging, and delivery. Our team can provide technical information and project support according to your application requirements.

Why Choose This 51.2V 400Ah LiFePO4 Battery?

This battery is designed for buyers who need a reliable, scalable, and professional energy storage solution. With 20.48kWh nominal capacity, intelligent BMS protection, multiple communication protocols, long cycle life, and support for parallel expansion, it is a practical choice for solar storage and backup power systems.

Whether you are sourcing batteries for residential solar projects, distributor inventory, off-grid systems, or customized energy storage solutions, this 51.2V 400Ah LiFePO4 Battery provides a balanced combination of performance, safety, scalability, and B2B supply flexibility.