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AC-Coupled 5kW / 15.36kWh Energy Storage System for PV Retrofit & EMS Integration

AC-Coupled Energy Storage for Existing PV Systems

The AC-Coupled 5kW / 15.36kWh Energy Storage System is designed for residential and light commercial PV retrofit projects. It can be added to existing solar installations without replacing the current PV inverter, making it a practical solution for energy companies, installers, EMS platforms, and OEM/ODM partners looking to expand storage deployment in Europe.

With AC-coupled architecture, LiFePO4 battery technology, cloud-based monitoring, and scalable capacity, the system provides a flexible storage solution for self-consumption optimization, backup power, and intelligent energy management.

Technical Specifications

Item Specification
Model AC15/5
Coupled Mode AC Coupled
Rated Output Power 5000W
Rated AC Voltage 220/230Vac
Rated Grid Frequency 50/60Hz
Input Voltage Range 170–280Vac
Conversion Time 10ms

    Key Advantages

    1. Built for PV Retrofit Projects

    The system is designed to work with existing PV systems. It can be integrated on the AC side, allowing users to add energy storage without redesigning the original solar installation.

    Suitable for:
    • Existing rooftop PV systems
    • Residential energy storage upgrades
    • Small commercial PV retrofit projects
    • Energy companies offering storage add-on solutions
    • EMS providers looking for compatible battery hardware

    2. EMS-Ready with Cloud Monitoring

    The system supports BST Cloud for remote monitoring via web and app, making it suitable for energy companies and platform operators who need visibility over installed storage assets. This allows partners to monitor system operation, support end users remotely, and develop energy management services based on real operating data.

    Monitoring options include:
    • Web-based monitoring
    • App-based monitoring
    • Cloud platform access
    • Remote system status checking
    • Integration-friendly project deployment

    3. Scalable Capacity up to 92kWh

    Each system has a total capacity of 15.36kWh with three battery modules. For larger projects, up to 6 units can be connected in parallel, expanding total capacity up to 92kWh. This makes the system suitable not only for residential homes, but also for larger energy storage applications where higher capacity is required.

    Scalable design:
    • 15.36kWh per system
    • 5.12kWh per battery module
    • Up to 6 units in parallel
    • Maximum total capacity up to 92kWh

    4. Reliable Backup Power

    The system supports 5000W rated output power and a 10ms grid-backup switch, helping provide fast backup power for critical loads when grid power is interrupted. With 10000VA peak power for 5 seconds, the system can support short-term high-starting loads within its protection range.

    Backup performance:
    • 5000W rated output
    • 10ms conversion time
    • 10000VA / 5s peak power
    • Backup load support
    • Zero-interruption power for critical loads

    Safe LiFePO4 Battery Technology

    The system uses LiFePO4 battery technology, known for safety, long cycle life, and stable performance. The battery is designed for 6000 cycles at 80% DoD and a 10-year design life.

    Battery features:
    • LiFePO4 battery chemistry
    • 15.36kWh total capacity
    • 5.12kWh module capacity
    • 51.2V rated voltage
    • 6000 cycles at 80% DoD
    • 10-year design life

    OEM / ODM Cooperation

    OEM / ODM Customization

    For energy companies, distributors, EMS providers, and brand owners, the system supports OEM/ODM customization. Appearance and display can be customized according to project or brand requirements. This makes it suitable for partners who want to launch their own energy storage product line with reliable hardware and flexible branding options.

    Customization options:
    • Appearance customization
    • Display customization
    • Branding support
    • OEM / ODM project cooperation
    • Energy storage hardware partnership