CFE 51.2V 330Ah Residential Stackable Energy Storage Battery System

Product Description
The CFE 51.2V 330Ah Residential Stackable Energy Storage Battery System is a high-capacity Home Energy Storage System built with advanced Lithium Iron Phosphate (LiFePO₄) technology. With approximately 16.9 kWh of usable energy per unit, it is designed for residential solar storage, self-consumption optimization, and reliable backup power applications.
Engineered for modern households, this system combines high energy density, strong safety performance, and flexible scalability in one integrated solution. Its modular and stackable structure allows homeowners to expand both capacity and voltage according to actual electricity demand, making it ideal for growing household energy storage needs. Multiple units can be connected in series or parallel without requiring complicated configuration or additional equipment, allowing smooth and cost-effective system upgrades over time.
At the control level, the battery integrates high-precision voltage and current sampling together with a proven battery management strategy. This ensures accurate and stable state-of-charge estimation over the long term, helping users manage daily electricity use more predictably and efficiently. Backed by CFE’s experience in battery system integration, this product offers an excellent balance of safety, long service life, and installation convenience, making it a dependable home solar battery and home power backup battery for residential users.

Features & Advantages
High-Safety LiFePO₄ Cell Chemistry
The system uses Lithium Iron Phosphate chemistry, which is widely recognized for its excellent thermal stability and lower risk of thermal runaway compared with ternary lithium batteries. This makes it a safer and more reliable choice for residential applications where long-term stability is essential.
Long Cycle Life for Long-Term Residential Use
Under standard test conditions, the battery delivers 6,000 cycles or more while retaining around 80% of its initial capacity. This long cycle life helps reduce replacement frequency and lowers lifecycle costs, making it a practical investment for homeowners seeking dependable long-term energy storage.
Flexible System Scalability
Up to 10 battery units can be connected in series or parallel, allowing users to expand system size according to actual consumption needs or future solar upgrades. This scalable design makes the product an ideal Home Energy Storage System for households planning to increase storage capacity over time without large upfront investment.
Multiple Hardware-Level Protection Mechanisms
The battery system integrates protection against over-current, over-voltage, under-voltage, short circuit, and over-temperature conditions. In addition to standard electrical protections, the system also includes hardware-level safety mechanisms and an integrated condensed aerosol fire suppression unit, providing an extra layer of protection for residential use.
Installer-Friendly Modular Design
The product features a simplified buckle fixing structure and supports both stackable and floor-standing installation. This helps reduce installation time and labor costs while making deployment easier for local technicians. For customers comparing installation formats, this product functions as a practical Floor-Mounted Energy Storage Battery solution while still offering the flexibility of stackable expansion.
Reliable Low-Voltage Residential Energy Platform
As a high-capacity Low Voltage LFP Battery, the system is designed to deliver stable performance for daily residential charging and discharging cycles. It is well suited for households seeking a safer, more manageable alternative to higher-voltage battery architectures.

Application Scenarios
Residential Solar Energy Storage
Installed with rooftop PV systems, this battery stores excess solar energy generated during the day and makes it available for use at night or during low-sunlight periods. As a reliable home solar battery, it helps increase self-consumption and reduce dependence on the utility grid.
Home Backup Power Systems
During grid outages, the battery can supply power to essential household loads such as lighting, refrigeration, internet equipment, and security systems. This makes it an effective home power backup battery for improving residential energy resilience.
Off-Grid and Weak-Grid Residential Power Supply
For homes in areas with unstable grid conditions or limited grid access, the system can work as a stable backup or primary power source when paired with solar and inverter equipment, supporting greater energy independence.
Peak and Valley Tariff Optimization
The battery can be charged during off-peak electricity pricing periods and discharged during peak hours, helping homeowners lower electricity costs and improve energy efficiency through smarter usage strategies.
Villas and Multi-Residential Distributed Energy Storage
Thanks to its modular expansion capability and high single-unit capacity, the system is also suitable for villas, duplexes, and multi-residential distributed storage applications where larger energy reserves are required.

Certification & Compliance
The CFE 51.2V 330Ah battery system is designed to meet international transportation and integration requirements for residential energy storage products. It includes:
• UN38.3 lithium battery transportation testing
• Compliance with UN3480 international lithium battery transport regulations