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  • Top seller   Battery | energy storage unit | for solar energy storage | hybrid | 5.1 kW | 51.2 V | 100 A | 1C | SmartBee-5120MT
    Top seller   Battery | energy storage unit | for solar energy storage | hybrid | 5.1 kW | 51.2 V | 100 A | 1C | SmartBee-5120MT 1

    Battery | energy storage unit | for solar energy storage | hybrid | 5.1 kW | 51.2 V | 100 A | 1C | SmartBee-5120MT

    Code: SmartBee-5120MT
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    Price 1328.04 € VAT incl.
    ( 1097.55 € VAT excl. )
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    This is a wall-mounted LiFePO4 energy storage system designed to store energy generated by solar power plants for later use. The nominal capacity of a single unit reaches 5120 Wh, with a usable energy of up to 4600 Wh. An integrated BMS (Battery Management System) monitors battery voltage, current, and temperature, balances the cells, and helps ensure safer, more stable, and longer-lasting system operation.
  • Product description

    SmartBee-5120MT Hybrid LiFePO4 Energy Storage – 5.12 kWh, 51.2 V, 100 A, Wall-mounted, for Solar Power Plants

    This is a wall-mounted LiFePO4 energy storage unit designed to store energy generated by a solar power plant for later use. The nominal capacity of a single unit is 5120 Wh, with a usable energy capacity of up to 4600 Wh. The integrated BMS (Battery Management System) monitors battery voltage, current, and temperature, balances cells, and helps ensure safer, more stable, and long-lasting system operation.

    Key Concept:
    This storage unit is designed for solar energy storage and uninterrupted power supply, useful for evenings, nights, during low solar generation, or when used with a compatible hybrid inverter with backup power functionality. LiFePO4 technology, integrated BMS, 1C charge/discharge rate, and the ability to expand the system up to 20.48 kWh make this model suitable for homes, small businesses, and smaller energy projects.
    Nominal Capacity
    5120 Wh / 5.12 kWh
    Usable Energy
    Up to 4600 Wh
    Max Current
    100 A charge and discharge
    Battery Technology
    LiFePO4 with integrated BMS

    Operating Principle

    The SmartBee-5120MT energy storage unit captures excess energy produced by the solar power plant when production exceeds consumption. This stored energy can be used later—in the evenings, at night, during periods of low solar generation, or during power grid failures, provided the system is designed with a compatible hybrid inverter and backup power solution.

    The integrated BMS continuously monitors the status of battery cells, voltage, current, and temperature. It helps manage charging and discharging processes, balances battery cells, and protects the unit from improper operating conditions. Remote diagnostics and real-time data monitoring facilitate easier maintenance and system performance tracking.

    What does a 1C charge/discharge rate mean?
    1C means the battery can theoretically be charged or discharged in approximately one hour when using current matching its nominal capacity. In this model, the maximum charge and discharge current is 100 A; however, actual system performance depends on the inverter, cables, protection devices, settings, and specific operating conditions.

    Technical Parameters

    Model SmartBee-5120MT
    Product Type Hybrid energy storage / battery for solar plants
    Battery Technology LiFePO4
    Nominal Battery Capacity 5120 Wh / 5.12 kWh
    Usable Energy 4600 Wh / 4.6 kWh
    Depth of Discharge (DoD) ≤90 % of stored energy
    Nominal Voltage 51.2 V
    Voltage Range 44.8–57.6 V
    Max Charge Current 100 A
    Max Discharge Current 100 A
    Charge / Discharge Rate 1C
    Service Life ≥6000 cycles, up to 80% capacity at 25 °C and 0.5C mode
    System Expansion Up to 20.48 kWh
    BMS System Integrated Battery Management System
    BMS Functions Cell monitoring, voltage, current and temperature control, cell balancing, charge and discharge management
    Communication Interfaces RS232, CAN 2.0
    Remote Monitoring Remote diagnostics and real-time data monitoring
    Charging Temperature 0 °C ... +50 °C
    Discharging Temperature -10 °C ... +50 °C
    Storage Temperature -15 °C ... +60 °C
    Cooling Method Natural convection
    Permissible Ambient Humidity 20–95 %, non-condensing
    Noise Level <25 dBa
    Protection Class IP20
    Mounting Wall-mounted
    Dimensions 630 x 453 x 182 mm
    Weight 51.2 kg

    Applications

    • Home Solar Power Plants – for storing daytime energy for evening or nighttime use.
    • Hybrid Solar Power Plants – used in conjunction with a compatible inverter that supports low-voltage LiFePO4 batteries.
    • Backup Power Systems – for critical loads, provided the inverter and electrical installation are designed for emergency power.
    • Small Business Facilities – to increase self-consumption and optimize grid electricity usage.
    • Energy Projects – when expanding energy storage capacity up to 20.48 kWh is required.

    Practical Usage Example

    For instance, a home solar power plant generates more energy during the day than the building consumes. A compatible hybrid inverter directs excess energy into the SmartBee-5120MT storage unit. In the evening, when solar generation decreases, the stored energy can be used to power the home's appliances.

    If one 5.12 kWh unit is insufficient, the system can be configured with multiple compatible batteries. The total energy storage capacity can be expanded up to 20.48 kWh, but the specific connection method, wire cross-sections, fuses, communication, and inverter settings must be selected by a qualified professional.

    Usage by Profile

    For Electricians: A compact wall-mounted energy storage unit suitable for technical rooms or electrical equipment zones. Before connection, it is necessary to evaluate inverter compatibility, BMS communication protocol, DC protection, cable cross-section, grounding, and the load-bearing capacity of the mounting surface.

    For Engineers / Designers: The 51.2 V LiFePO4 storage unit can be used when designing smaller hybrid energy storage systems. The specified 5.12 kWh nominal capacity, up to 4.6 kWh usable energy, 100 A current, and the ability to scale up to 20.48 kWh allow for solutions tailored to electrical consumption profiles and backup power needs.

    For Homeowners or Business Users: This is a solution that helps consume more of your solar plant's generated energy for your own needs. The final result depends on the solar plant's capacity, consumption habits, inverter features, the number of batteries chosen, and system settings.

    Pros

    • LiFePO4 Technology – widely used in stationary energy storage.
    • 5.12 kWh Nominal Capacity – suitable for small to medium hybrid systems.
    • Up to 4.6 kWh Usable Energy – up to 90% of stored energy can be utilized.
    • Integrated BMS – for monitoring cell voltage, current, and temperature, as well as balancing.
    • 100 A Charge/Discharge Current – 1C operating mode.
    • ≥6000 Cycles – long service life under proper conditions.
    • RS232 and CAN 2.0 Communication – for integration with compatible energy management equipment.
    • Remote Diagnostics – for real-time system status monitoring.
    • Compact Wall-mounted Housing – 630 x 453 x 182 mm.
    • Scalable up to 20.48 kWh – for higher energy storage needs.
    • Natural Convection – very quiet operation, noise level under 25 dBa.

    Cons / Limitations

    • IP20 Protection Class – intended for dry indoor use only, not for outdoor conditions.
    • Charging from 0 °C – battery cannot be charged at sub-zero temperatures unless a separate heating solution is included in the system.
    • Requires Compatible Hybrid Inverter – necessary to verify 51.2 V battery and BMS communication compatibility.
    • 51.2 kg Weight – wall mounting must be performed on sufficiently strong structures.
    • Professional Installation Required – incorrectly selected cables, fuses, or settings may lead to system malfunctions.
    • Backup Power is not automatic just by battery – requires a suitable inverter, electrical circuit, and protections.

    Safety and Installation Notes

    The energy storage unit is a high-current DC device. Even with a relatively low nominal voltage, 100 A current requires properly selected cables, connectors, fuses, DC disconnect switches, and professional installation.

    • Installation and connection must be performed by a qualified electrician or solar energy specialist.
    • Verify inverter compatibility with 51.2 V LiFePO4 batteries and the specific BMS communication protocol via CAN or RS232 before purchasing.
    • Do not charge the battery at temperatures below 0 °C, unless otherwise specified by the manufacturer for the specific setup.
    • Install only in dry indoor areas, protected from direct moisture, excessive dust, condensation, and sunlight.
    • Do not cover the housing or restrict natural ventilation – ensure sufficient space around the battery for heat dissipation and maintenance.
    • Verify manufacturer-approved connection methods, the number of additional storage units, and communication settings before scaling the battery system.
    • Do not use a damaged storage unit and do not connect it to the system if the housing, connectors, or cables show mechanical damage.

    Quick Selection Guide

    The SmartBee-5120MT is suitable when you need a compact 51.2 V LiFePO4 storage unit for a hybrid solar power plant to increase solar self-consumption. A single unit provides 5.12 kWh of nominal capacity and up to 4.6 kWh of usable energy, with the option to scale up to 20.48 kWh.

    Nominal Capacity
    5.12 kWh
    Usable Energy
    Up to 4.6 kWh
    Charge / Discharge
    Up to 100 A / 1C
    Mounting
    Wall-mounted, indoor
    Suitable when you need to:
    • store excess solar power plant energy;
    • use more of your own solar energy during evenings and nights;
    • a compact wall-mounted LiFePO4 storage unit;
    • remote diagnostics and BMS system;
    • the ability to expand energy storage up to 20.48 kWh.
    Check before ordering:
    • does your hybrid inverter support 51.2 V LiFePO4 batteries;
    • is the CAN or RS232 BMS communication protocol compatible with your inverter;
    • how much usable energy is needed based on real electricity consumption;
    • is the wall surface strong enough for a 51.2 kg battery;
    • is the room provided with proper temperature and moisture protection;
    • are additional DC protections, cables, connectors, and mounting accessories required.
    Important Reminder:
    Battery capacity, power, and backup power capabilities are different things. The storage unit alone is not enough for the system to operate during power outages—a compatible hybrid inverter, a correctly designed electrical circuit, and properly selected protections are essential.

    FAQ – Frequently Asked Questions

    How much energy can the SmartBee-5120MT battery store?
    The nominal capacity of one unit is 5120 Wh, or 5.12 kWh. The usable energy is up to 4600 Wh, or 4.6 kWh.
    Is this a 5.1 kW or 5.1 kWh battery?
    Capacity is indicated in energy units – 5.12 kWh. Kilowatts (kW) describe power, while kilowatt-hours (kWh) indicate how much energy the battery can store. At 51.2 V and up to 100 A current, theoretical instantaneous power can reach about 5.12 kW, but the actual power depends on system settings and the inverter.
    Can the battery work during a power outage?
    The battery itself stores energy, but for backup power, a compatible hybrid inverter and a properly designed electrical installation with emergency power functionality are required.
    Can multiple units be connected?
    Yes, the system can be expanded up to 20.48 kWh. Before connecting multiple units, it is necessary to check manufacturer requirements, inverter compatibility, and the maximum number of batteries allowed.
    What does the integrated BMS do?
    The BMS monitors battery cell status, voltage, current, and temperature, helps balance cell charging and discharging, and manages battery operation for safer and more stable use.
    Can this storage unit be mounted outdoors?
    No. IP20 protection class means the unit is intended for dry indoor areas. It cannot be mounted in locations where it may be exposed to rain, condensation, or direct moisture.
    Can the battery be charged in winter in an unheated room?
    The battery charging temperature range is 0 °C to +50 °C. If the temperature drops below 0 °C, the charging capability should be assessed according to manufacturer guidelines and the specific system setup.

    Compact LiFePO4 Energy Storage for Higher Solar Self-Consumption

    A 5.12 kWh nominal capacity LiFePO4 battery designed to store solar plant energy for use when you need it most. Up to 4.6 kWh usable energy, 100 A charge and discharge current, and an integrated BMS system provide the foundation for reliable hybrid system operation.

    With its wall-mount design, RS232 and CAN 2.0 communication, remote diagnostics, quiet natural cooling, and the ability to scale the system up to 20.48 kWh, this storage unit is a practical choice for homes, small businesses, and energy storage projects focused on efficient solar energy utilization.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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