SolaX X1-FIT G4 7.5kW AC Coupled Battery Inverter and 5.8-17.3kWh SolaX T58 Battery Energy Storage System

By SolaX

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Optimise Your Energy Usage with 7.5kW Inverter and 5.8-17.3kWh AC Coupled Energy Storage System

Trade only product - MCS or NICEIC membership required

AC Coupled Energy Storage System (ESS) offers a strategic solution for harnessing energy efficiently from cost-effective sources like solar panels and off-peak Octopus mains power. This system empowers users to utilise stored energy effectively, avoiding low feed-in tariffs and expensive peak-rate power.

Zero VAT applies to new residential energy storage batteries when purchased from your installer. Take advantage of our cost effective battery installation service (starting at just £199) and pay zero VAT on your battery installation! Click here to request a quote, contact us via live chat or call 020 8064 0335 for live expert advice.

The SolaX X1-FIT G4 7.5kW AC Battery Inverter and 5.8-17.3kWh SolaX T58 5.8kWh Battery Energy Storage System (5.8-17.3kWh/7.5kW AC Coupled ESS) comprises:

This 5.8-17.3kWh/7.5kW AC Coupled ESS efficiently manages energy usage, ensuring a stable electricity supply and reducing costs by charging the battery with solar or low-priced off-peak Octopus electricity. Coupled with a private power source like on-grid solar panels, it provides a continuous 24/7 power supply for your home.

The 7.5kW X1-FIT G4 AC Coupled Battery Inverter is designed for compatibility with an external backup generator, seamlessly supplying electricity during prolonged grid outages when the battery storage is emptied.
    • SolaX 5.8kWh Triple Power T58 Master ans Slave Battery Module: A high-performance, scalable battery storage module with a modular design for maximum flexibility. Easy installation, plug-and-play solution, 95% charge/discharge efficiency, 100% depth of discharge, and a cycle life of over 6000 cycles.
    • SolaX X1-FIT G4 7.5kW AC Coupled Battery Inverter: A high-quality inverter converting solar energy to AC energy, compatible with high voltage batteries. Suitable for indoor or outdoor installation, featuring natural cooling, quiet operation, and low maintenance.
    • SolaX X1-FIT G4 7.5kW AC Battery Inverter Working Modes:
      • Self-use (default): Because there is no PV supplied, battery will discharge for local loads firstly, and grid will supply power when the battery capacity is not enough.
      • Feed in priority: The priority of inverter output power is: feeding to the grid  --> supplying the load --> charging the battery. This work mode applies to the area with high feed-in tariff.
      • Force time use: In this work mode the charging and discharging time can be set flexibly, and 
      • Back up mode: Battery will stop discharing to keep higher capacity when the grid is on. Only when the gird is off is not enough, battery will start to discharge to keep the emergency load working normally. This work mode applies to the area where suffering from blackout regularly.

    The system seamlessly integrates with smart Octopus tariffs, allowing automatic optimization for Plunge Prices and super cheap prices. With solar panels and the battery storage system, your electric unit price can be drastically reduced!

    • Enjoy a 2-3 working day delivery within the UK (longer to the Highlands, islands, and Northern Ireland).
      Battery Type: Lithium Iron Phosphate (LiFePO4)
      Total Energy: 5.8kWh
      Useable Energy: 5.1kWh
      Nominal Voltage: 115.2V
      Operating Voltage Range: 100-131V (MASTER)/200-262V (MASTER + SLAVE)/300-393V (MASTER + 2xSLAAVE)
      Rated Power: 2.8kW
      Max. Power: 4.0kW
      Recommended Charge/Discharge Current: 25A
      Max. Charge/Discharge Current: 35A
      Available Charge/Discharge Temperature Range: 0 ~ +55°C
      Charge/Discharge Efficiency: 95%
      Cycled life (90% DOD): 6000 cycles
      Depth of Discharge: 100%
      Expected Life Time / Warranty: 10 years
      Protection Level: IP65
      Net Weight: MASTER - 72.2kg; SLAVE: 68.5kg
      Size:  MASTER: 474×193×708mm, SLAVE: 474×193×647mm
      Battery Type: Lithium Iron Phosphate (LiFePO4)
      Rated Battery Voltage: 80-480V
      Max. Charge/Discharge Current: 30A
      Max. Apparent AC Input: 9200VA
      Max. AC Current: 40A
      Nominal Grid Voltage (AC Voltage Range): 220/230/240V 
      Nominal Grid Frequency/Range: 50/60Hz
      Nominal AC Power: 7500W
      Max. AC Apparent Power: 7500VA 
      Max. AC Output Current: 32.6A
      Rated Grid Voltage: 220/230/240V 
      Rated Grid Frequency: 50/60Hz
      Power Factor: 1 ( Adjustable from 0.8 leading to 0.8 lagging )
      THDi: <2% @rated power
      Nominal Output Power: 7500W
      Peak Apparent Power: 7500VA
      Max.Continous Current: 32.6A
      Nominal Voltage; Frequency: 230V, 50/60Hz
      Switch Time: <10msec
      Parallel Operation: Yes
      Battery Charge/Discharge Efficiency: 97.0%/97.0%
      Operating Temperature: -30 ~ +60°C (derating at 45°C)
      Protection Degree: IP65 
      Size:  482×417×181mm
      Net Weight: 23kg
      • 1x SolaX Triple Power HV 5.8kWh LFP Main Battery MASTER V2,
      • 1x or 2x SolaX Triple Power HV 5.8kWh LFP Main Battery SLAVE V2,
      • 1x SolaX X1-FIT G4 7.5kW AC Coupled Battery Inverter
       Don't see answer to your question? Call us on 020 8064 0335 or email