Full technical review ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery

ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery

By andibond | 26.01.2026

Product Introduction

The ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery is a sophisticated household energy storage solution designed to address the growing demand for reliable and sustainable power management. This system primarily comprises a robust battery module, an integrated Battery Management System (BMS), and essential output interfaces, enabling efficient power storage and release in conjunction with AC/DC inverter systems. Its unique modular design allows for flexible capacity expansion, making it highly adaptable to various household energy requirements. When integrated into a photovoltaic (PV) optical storage system, the battery intelligently stores excess solar energy and seamlessly discharges it to power loads when PV generation is insufficient, ensuring continuous and optimized energy supply. This device is engineered for modern homes seeking energy independence, cost savings, and enhanced power reliability, particularly in conjunction with renewable energy sources.

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Technical Support & Resources

Resources: ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery.pdf

Hardware specifications

Core Specifications: ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery

• Battery Included: Yes
• Battery/Cell Classification: Lithium Iron Phosphate, LiFePO4
• Brand Name: ANENJI
• Nominal Capacity: 300Ah
• High-concerned chemical: None
• Origin: Mainland China
• Cell Type: LFP 3.2V/300Ah
• Cell Series-Parallel Mode: 16S1P
• Nominal Voltage: 51.2V
• Working Voltage Range: 43.2V to 57.6V
• Total Energy Capacity: 15.36kWh
• Rated Charge-Discharge Current: 0.5C
• Cycle Life: Over 6000 cycles
• Operating Temperature (Discharge): 0°C to 55°C
• Operating Temperature (Charging): -10°C to 55°C
• Weight: 115 ± 5 Kg
• Built-In BMS Protection: Yes
• Balance Function: Yes
• Communicate Function: Yes (CAN, RS485, RS232)
• Storage History Function: Yes
• Efficiency: ≥96%
• Maximum Parallel Units: 15 Pcs
• Maximum Current: 200A
• Output Control: ON/OFF switch
• Safety Features: Product round edge design to avoid accidental collision

Available Versions

Available Versions & Selection Guide

The available version for this product is ANJ-300AH-PX.

Package Contents

What’s in the Box?

Features and benefits

Why I love ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery

• Flexible Configuration and Easy Installation: The modular design of the ANENJI battery allows users to freely deploy and expand capacity as needed. This means that starting with a single unit, users can easily add up to 15 additional battery modules in parallel to achieve a total energy capacity of up to 230.4 kWh (15.36 kWh * 15), providing unparalleled scalability for evolving energy demands without complex reconfigurations.
• Ultra-High Protection and Enhanced Safety: With an IP65 protection level, this battery is robustly designed to calmly deal with challenging outdoor environments, offering superior resistance against dust and water ingress. Furthermore, the product features a built-in BMS (Battery Management System) that provides comprehensive protection, including balance function, communication capabilities, and storage history, ensuring stable and safe operation over its extensive lifespan. The physical design also incorporates round edges to mitigate the risk of accidental collisions, enhancing overall safety.
• Seamless Multi-Mode Switching: The ANENJI battery supports intelligent switching across various application modes, including a seamless transition to off-grid grid blackout mode. This critical feature ensures an uninterrupted power supply during grid failures, providing peace of mind and continuous operation for essential household appliances and systems, making it an ideal solution for areas prone to power outages.
• Remote Monitoring and Real-time Status: A humanized management platform allows users to freely log in via mobile phones and computers to view the real-time working status of the battery bank. This remote monitoring capability, facilitated by standard RS485 and RS232 communication interfaces (and CAN support), enables detailed information tracking and proactive management, ensuring optimal performance and early detection of any potential issues.
• Exceptional Longevity and High Efficiency: Utilizing Lithium Iron Phosphate (LiFePO4) cells, the battery boasts an impressive cycle life of over 6000 cycles, significantly outperforming traditional lead-acid batteries and offering a long-term, reliable energy storage solution. Coupled with an efficiency of ≥96% and a usable energy ratio that can reach 95%, the system ensures that a maximum amount of stored energy is available for use, minimizing waste and maximizing energy independence.
• Cost-Effective and Convenient Delivery: For customers in the EU and the US, this super-large and super-power battery is shipped without the need for customers to pay customs duties, offering significant cost savings. While the transportation method involves sea freight to the destination port followed by truck delivery, resulting in an approximate 45-day delivery time, the duty-free delivery to your door in some areas of Ukraine further enhances its value proposition for specific markets.

Pros and Cons

Strengths & Weaknesses:

What I Like
— Exceptional Cycle Life: Over 6000 cycles ensures long-term reliability and value.
— High Energy Capacity: 15.36KWH (51.2V 300Ah) provides substantial power storage for household needs.
— Scalable Modular Design: Supports parallel connection of up to 15 units for significant capacity expansion.
— Robust Protection: IP65 rating for outdoor use and comprehensive Built-In BMS for safety and cell balancing.
— Advanced Communication: Features CAN, RS485, and RS232 for real-time monitoring and integration.
— High Efficiency: ≥96% efficiency with a 95% usable energy ratio maximizes power utilization.
— Remote Monitoring: User-friendly platform accessible via mobile and computer for convenience.
— Duty-Free Shipping: Available for EU and US customers, reducing overall cost.
— Seamless Power Transition: Intelligent switching to off-grid mode during blackouts.

Points to Consider
— Extended Delivery Time: Approximately 45 days for delivery due to sea freight and truck transport.
— Significant Weight: At 115 ± 5 Kg, installation may require multiple people or specialized equipment.
— Limited European Island Delivery: Delivery is not supported in European islands.
— Specific Shipping Method: Relies on sea freight and truck, which might not suit urgent requirements.
— Brand/Store Discrepancy: Product brand is ANENJI, but store is listed as lilygo Official Store.

Pinout and Interface Map

Pinout Configuration: ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery

Interface Definition

Comparison table

Technical Specifications & Comparison ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery

LED lights working status instruction

Final summary

Final Verdict: ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery

The ANENJI 51.2V 300Ah Rack-mounted LiFePO4 Battery stands out as an exceptional choice for serious household energy storage applications, particularly for those integrating with photovoltaic systems. Its robust LiFePO4 chemistry, offering over 6000 cycles and a substantial 15.36KWH capacity, ensures long-term reliability and significant energy independence. The modular design, allowing parallel connection of up to 15 units, makes it incredibly versatile for scaling energy needs, while the IP65 protection and comprehensive BMS guarantee safety and durability in various environments. This battery is an ideal investment for homeowners, off-grid enthusiasts, and professionals seeking a high-performance, scalable, and intelligent energy storage solution, with its advanced communication features and remote monitoring capabilities being a major advantage that outweighs the longer delivery times. For more in-depth analyses, visit andibond.com.