Alpha ESS SMILE-S6-HV 6.0kW IP65 Single Phase Hybrid Inverter


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Empower Your Energy Independance with Alpha ESS SMILE-S6-HV 6.0kW IP65 Single Phase Hybrid Inverter

Established in 2012, Alpha ESS specialises in advanced battery storage products and intelligent energy management solutions for both residential and commercial applications.

The SMILE-6-HV-INV goes the extra mile with its ability to be on-grid and off-grid. If you experience a power cut or disconnect from the grid, the automated islanding function will kick-in and use your stored electricity to power your home.

In today’s world, much of our lives are assisted using the power of technology, which
is why the Smile S6 was designed to be a high-voltage product. It is 8 percent more efficient than our Smile5 residential battery due to its ability to have an output rate of 6kW, and simultaneously store an additional 3kW. This means when the solar panels are producing maximum energy, it is stored for later use as opposed to going to waste.

Our Smile S6 HV can pair with up to six batteries, with the large 8.2kWh Alpha-SMILE-G3-BAT 8.2-49.2kWh Battery System  battery expanding your storage capacity to 49.2kWh

  • Suitable for use both Indoors & Outdoors
  • Can connect up to 9kW PV Input
  • Maximum PV Input Current: 15A per String
  • Supports AC/DC Coupling
  • Supports On-grid and Off-grid Operation
  • Compatible Fully off-grid Operation Without Grid Supply
  • All-in-one Modular battery
  • Up to 49.2kWh with 8.2kWh Batteries (1-6 in Parallel)
  • Intelligent control via AlphaCloud
  • Built In WiFi Dongle and LAN for Ethernet Connection
  • CT Clamp 1 No. Included for DC Coupling


  • Up to 49.2kWh battery can be connected: This Alpha ESS SMILE-S6-HV-INV Hybrid Inverter has UPS functionalities with a built in battery facility 8.2kWh which can be expanded up to 6 batteries upon at any time. The all in one system has a great monitoring platform and is very easy to install. It has a modern design to fit in with other appliances inside your house. Solar panels can be added to the system in order to generate more power. There is a warranty of 10 years on the battery.
    • Works with Smart Tariffs including Octopus Energy: When combined with a AlphaESS battery, the AlphaESS SMILE-S6-HV-INV Hybrid Inverter has been designed to work seamlessly with smart energy tariffs. The first energy supplier to offer such a tariff is Octopus Energy, however the AlphaESS battery system works perfectly with any other energy provider.

    • Intelligent Hybrid Inverter: Offering a fast response and uninterruptible power supply, this single phase hybrid inverter features an intelligent modular design and 24/7 monitoring both online and via the AlphaESS app.

    • Fast Delivery Across the UK: Experience quick 2-3 working days delivery within the UK (longer to the Highlands, islands, and Northern Ireland).
    Required Part: The AlphaESS SMILE-S6-HV inverter does not come with energy meter supplied. Separate Alpha Chint DTSU666 Meter With 6 CTs part needs to be purchased. CLICK HERE

        Detailed specifications:

        Model: SMILE-S6-HV-INV
        Battery Type: Lithium-Ion (LiFePO4)
        Battery Voltage: 256.0V
        Battery Capacity: 8.2 - 49.2kWh
        Depth of Discharger: 95% 
        Useable Capacity Range: 7.8 - 46.8kWh
        Max. Charge/Discharge Current: 40A
        INPUT PV
        Max. Input Power: 9000W
        Max. Input Voltage: 580V
        MPPT Voltage Range: 100-550V
        Max. Input Current: 15A/15A
        Max. Short-circuit Current: 18.75A/18.75A
        MPPT Number / Max. Input Strings Number per MPPT: 2/1
        Max. AC Input Power (Grid Port): 6000W
        Rated Output Power: 6000W
        Rated Voltage: 220-230VAC
        Rated Grid Frequency: 50/60Hz
        Backup: UPS
        Communication: Ethernet / WiFi / 4G
        Protection Degree: IP65
        Relative Humidity: 0-95% (No condensing)
        Size: 580 x 230 x 606 mm
        Net Weight: 27kg

        In the Box:
        • 1 X Alpha SMILE-S6-HV-INV 6.0kW IP65 Hybrid Inverter,
        • 1 X Alpha SMILE-S6-HV-INV 6.0kW IP65 Hybrid Inverter User's Manual.
        Frequently Asked Questions:

        Don't know an answer to your question? Call us on 020 8064 0335 or email