CFE-5 Modular Low-Voltage Energy Storage Battery | 5.12kWh Stackable Design, Compatible with Mainstream Inverters, Ideal for Residential and Small Commercial Use

5.12kWh Modular Lithium Battery | 51.2V Low-Voltage Storage | Stackable Energy Storage System | Residential Backup Power Solution

The CFE-5 is a cost-effective and flexible energy storage solution designed for residential users and small commercial applications. Built on a 51.2V low-voltage platform, it delivers 5.12kWh total energy, 4.4kWh usable energy, and 5kW continuous discharge power, making it suitable for daily household loads, light commercial equipment, and backup power needs.

With support for parallel connection of up to 8 units, the system allows flexible capacity expansion as energy demand grows. Combining the inherent safety of LFP cells, intelligent BMS protection, and broad inverter compatibility, the CFE-5 provides a reliable and economical foundation for household energy storage and small-scale distributed energy applications. As a practical Home Energy Storage System, it can also be used as a home solar battery or a home power backup battery for users seeking greater energy independence.

Features & Advantages

Long Cycle Life and Strong Value
Under standard operating conditions, the battery delivers more than 6,000 cycles with capacity retention of ≥80%. Backed by a 5-year warranty, it offers dependable long-term value for residential and light commercial users.

Stackable Design for Flexible Expansion
The modular stackable structure allows users to expand system capacity quickly and conveniently. This makes the CFE-5 an ideal Floor-Mounted Energy Storage Battery solution for projects that require flexible deployment without excessive installation complexity.

Smart Monitoring and Remote Upgrades
Built-in Wi-Fi allows users to monitor battery status, charging and discharging power, and remaining capacity in real time through a mobile app. OTA upgrades help keep the system software current and improve long-term user experience.

High-Accuracy SoC Estimation
Advanced sampling and management algorithms improve SoC accuracy, reducing the risk of unexpected shutdowns or over-discharge caused by inaccurate battery readings.

Multiple Safety Protections
The system includes protection against over-current, over-voltage, short circuit, under-voltage, and over-temperature conditions. Together with the thermal stability of LFP chemistry, this ensures safe and stable operation under a wide range of conditions.

Wide Inverter Compatibility
Supporting CAN and RS485 communication, the CFE-5 is compatible with more than 15 mainstream inverter brands, including Sunsynk, Sol-Ark, MUST, and Growatt. This strong compatibility makes it easier for users to add storage to existing solar systems without replacing core equipment.

Application Scenarios

New or Existing Solar System Upgrades
The CFE-5 can add storage capability to existing PV systems, helping homeowners increase solar self-consumption and improve energy independence. It is well suited for use as a home solar battery in both new and retrofit projects.

Small Shops and Home Offices
It provides stable backup power for lighting, cash registers, routers, computers, and network equipment, helping reduce losses caused by unexpected outages.

Residential Backup Power
As a dependable home power backup battery, the CFE-5 helps keep essential home circuits running during utility interruptions, improving daily energy security.

Remote Work and Small Off-Grid Spaces
The system is suitable for remote residences, cabins, and work pods that need reliable power support for communication devices and office equipment.

Microgrids and Community Energy Storage
Multiple units can be connected in parallel to form a larger storage system, helping balance local loads and improve overall power supply reliability.

Emergency Preparedness
The battery serves as a reliable standby energy source during natural disasters or grid failures, supporting essential household electricity needs.

Certifications & Compliance

The CFE-5 has obtained international certifications such as CE and CB, meeting market access requirements in Europe and other CE-recognized regions. The battery system also passes UN38.3 transportation safety testing to ensure safe logistics and delivery. Production follows strict quality control procedures, and every unit undergoes comprehensive functional and safety testing before shipment, ensuring reliable, safe, and compliant performance.