20.88kWh LiFePO4 Floor/Wall Battery HFIE 51.2V 408Ah 6000 Cycles IP65 self-heating module

HFIE 20.88kWh LiFePO4 Battery – 51.2V 408Ah IP65 Floor/Wall Mounted Energy Storage with Self-Heating

The HFIE LFPWall-20K-V2 20.88kWh is a high-capacity low-voltage lithium iron phosphate (LiFePO4) battery designed for residential, commercial and solar energy storage applications. With a nominal voltage of 51.2V, battery capacity of 408Ah and nominal energy of 20.88kWh, it provides a reliable and scalable solution for photovoltaic energy storage and backup power systems.

The HFIE battery combines 6000+ charge/discharge cycles, intelligent battery management, IP65 enclosure protection and flexible floor or wall installation. It is designed for integration with compatible low-voltage hybrid solar inverters and energy storage systems.

Key Features and Benefits of HFIE 20.88kWh

• 20.88kWh nominal energy – high-capacity battery storage for solar PV applications.
• 51.2V low-voltage architecture – suitable for compatible 48V-class hybrid inverters.
• 408Ah battery capacity – substantial energy storage for residential and commercial applications.
• LiFePO4 battery chemistry – excellent thermal stability, safety and long service life.
• 6000+ cycles – specified at 25°C and 0.5C.
• 90% depth of discharge – approximately 18.79kWh calculated usable energy.
• 14.336kW maximum output power – high discharge capability for a low-voltage battery system.
• 180A maximum charging current – supports high-current battery charging.
• 280A maximum discharging current – suitable for demanding electrical loads.
• Integrated BMS and fuse – battery monitoring and protection.
• IP65 protection rating – protection against dust and water jets.
• Floor or wall-mounted installation – flexible mounting options.
• Expandable up to 8 batteries in parallel – total nominal energy up to 167.04kWh.
• CAN / RS485 communication – integration with compatible low-voltage hybrid inverters.
• 15–20 years designed lifespan – according to the manufacturer's product information.

HFIE LFPWall-20K-V2 20.88kWh Technical Specifications

Advanced LiFePO4 Technology and Intelligent BMS

The HFIE LFPWall-20K-V2 uses lithium iron phosphate battery cells, offering excellent thermal stability and long cycle life. Its integrated Battery Management System (BMS) supports monitoring of operating conditions and protection of the battery cells.

A built-in fuse provides additional electrical protection, while CAN and RS485 communication interfaces enable integration with compatible hybrid inverters and energy management systems.

Flexible Floor or Wall Installation with IP65 Protection

The battery features a compact enclosure measuring 586 × 1250 × 220mm and supports floor-mounted or wall-mounted installation. Its net weight is 185kg, requiring appropriate structural support and professional installation.

The IP65 protection rating provides protection against dust ingress and water jets, making the battery suitable for appropriate technical rooms and protected installation areas.

Expandable Battery Storage up to 167.04kWh

The HFIE LFPWall-20K-V2 supports parallel connection of up to 8 battery units. This allows a scalable energy storage system ranging from 20.88kWh to 167.04kWh nominal capacity.

Parallel installation must follow the manufacturer's instructions, including verification of BMS communication, inverter compatibility, cable sizing and electrical protection.

Self-Heating Battery Module

This product is offered as a self-heating battery module. The heating function is intended to support battery operation in low-temperature environments. The activation conditions, heating power consumption and operating limits must be confirmed for the supplied product version.

Residential and Commercial Applications

• Residential solar PV energy storage systems.
• Low-voltage hybrid solar inverter installations.
• Solar self-consumption optimization.
• Backup power systems with compatible inverters.
• Commercial buildings, offices and small businesses.
• Off-grid and standalone photovoltaic installations.
• Expandable battery storage systems.

Frequently Asked Questions

What is the capacity of the HFIE LFPWall-20K-V2?

The battery provides 20.88kWh nominal energy, 51.2V nominal voltage and 408Ah capacity. At 90% DoD, the calculated usable energy is approximately 18.79kWh.

How much does the HFIE 20.88kWh battery weigh?

The battery has a net weight of 185kg and a gross shipping weight of 215kg.

Can multiple HFIE batteries be connected in parallel?

Yes. The manufacturer specifies support for up to 8 batteries in parallel, providing a calculated maximum nominal energy of 167.04kWh.

Which solar inverters are compatible?

The battery is designed for compatible low-voltage hybrid inverters. Battery voltage, charge/discharge current limits and BMS communication protocol must be verified before installation.

What is the expected battery cycle life?

The manufacturer specifies at least 6000 charge/discharge cycles at 25°C and 0.5C.

HFIE 20.88kWh LiFePO4 Battery – Price and Availability

Choose the HFIE LFPWall-20K-V2 20.88kWh 51.2V 408Ah IP65 Battery for reliable solar energy storage and scalable low-voltage battery applications. Contact us for pricing, availability, technical consultation and a customized quotation.