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    DEYE BOS W PACK5.1 Lithium Battery

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    The Huawei iSitePower-M-MAB05B1 is a high-performance 5kW lithium-iron phosphate (LiFePO₄) battery designed for modern solar energy systems. Built for reliability, efficiency, and long service life, it is ideal for both residential and commercial backup applications. Engineered by Huawei, this battery ensures stable performance, intelligent BMS protection, and seamless compatibility with hybrid inverters.

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    Product Description

    The DEYE BOS W PACK5.1 is a high-performance 5.12kWh lithium iron phosphate (LiFePO₄) battery module designed for residential and small commercial solar applications. Engineered by Ningbo Deye Inverter Technology Co Ltd, this battery provides exceptional reliability, advanced safety features, and seamless compatibility with Deye hybrid inverters and other leading brands.

    Its modular stackable design allows easy scalability for larger systems, making it ideal for off-grid, hybrid, or backup solar installations. With over 6,000 cycles at 90% depth of discharge (DoD), the DEYE BOS W PACK5.1 delivers long-lasting energy security and excellent return on investment.


    Product Features

    • Usable Energy Capacity: 5.12kWh

    • Battery Type: Lithium Iron Phosphate (LiFePO₄)

    • Scalability: Up to 6 units (≈30.7kWh total)

    • Cycle Life: 6,000+ cycles at 90% DoD

    • Compatibility: Optimized for Deye hybrid inverters and works with other brands

    • BMS Protection: Intelligent Battery Management System for safety and performance

    • Applications: Off-grid, on-grid hybrid, and backup energy systems


    Technical Specifications

    • Battery Type: Lithium Iron Phosphate (LFP)

    • Nominal Energy Capacity: 5.12kWh

    • Nominal Voltage: 51.2V

    • Continuous Discharge Current: 100A

    • Peak Discharge Current: 120A (10s)

    • Cycle Life: >6000 cycles @ 90% DoD

    • Scalability: Up to 6 units in parallel (30.7kWh total)

    • Dimensions: 480mm x 442mm x 132mm

    • Weight: ~50kg

    • IP Rating: IP65 – suitable for indoor/outdoor installation

    • Communication Ports: CAN / RS485

    • Operating Temperature: -20°C to +55°C

    • Warranty: 10 years


    Applications of DEYE BOS W PACK5.1

    Application TypeUse Case
    Residential Backup Storage Keeps homes powered during grid outages, ensuring uninterrupted supply for appliances.
    Off-Grid Solar Systems Enables complete energy independence in rural or remote areas.
    Hybrid Solar Systems Works with on-grid + battery setups for maximum efficiency.
    Commercial Small Storage Provides backup for small businesses to protect critical loads.
    Scalable Expansion Stackable units allow flexibility for growing energy demands.

    Installation Guide

    StepDescription
    Site Preparation Choose a cool, ventilated area. Ensure surface can support 60kg per unit.
    Safety Measures Wear PPE. Disconnect AC/DC before installation. Follow IEC/UL standards.
    Mounting Use rack-mount or stack units vertically with brackets provided.
    Clearance Maintain ≥150mm spacing around each unit for airflow.
    Grounding Properly ground the system using ≥16mm² copper wire.
    Communication Setup Connect via CAN/RS485 to compatible inverters (Deye, Victron, GoodWe, etc.).
    Power Connection Use 25–50mm² DC cables, observing polarity.
    Commissioning Configure DIP switches for inverter type, activate BMS, and verify status LEDs.
    Testing Perform charge/discharge test and confirm communication with inverter.

    What’s in the Box

    • 1 × DEYE BOS W PACK5.1 Battery Module

    • 1 × Communication Cable (CAN/RS485)

    • 1 × Mounting Bracket

    • 1 × Installation Manual (PDF)

    • 1 × User Manual (PDF)


    FAQs

    Q1: What is the usable capacity of the DEYE BOS W PACK5.1?
    A: The usable capacity is 5.12kWh at 90% DoD.

    Q2: How many units can be connected in parallel?
    A: Up to 6 units, totaling around 30.7kWh.

    Q3: Is it compatible only with Deye inverters?
    A: No. While optimized for Deye, it also works with other brands like Victron, GoodWe, and SMA.

    Q4: What is the warranty period?
    A: 10 years or 6,000+ cycles (whichever comes first).

    Q5: Can it be used outdoors?
    A: Yes, the IP65 rating allows both indoor and outdoor installation.

    Q6: What communication options are available?
    A: CAN and RS485, ensuring seamless inverter integration.

    Q7: Does it require special cooling?
    A: No external cooling required. The battery is designed with natural convection cooling.


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    DEYE BOS W PACK5.1 Lithium Battery

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