Residential ESS

J1-ESS

  • 3K/5.9K

The SolaX J1 ESS is a high-performance residential energy storage system featuring multi-level BMS protection for safety and 98% efficiency. With 5.8kW continuous output and modular expandability (up to 46.4kWh), it supports smart energy management via SolaX Cloud and flexible operation modes for optimal self-consumption

Product Advantage

The J1-ESS offers a power balance adjustment function, enabling self-sufficiency for single-phase loads, reducing the need to purchase electricity. It supports large PV modules up to 14A per circuit, with independent MPPT inputs for optimal solar energy utilization, even in low-light conditions. The system's wide input range and MPPT capability on all circuits ensure maximum efficiency and flexibility for various solar panel configurations, including up to three roof surfaces.

Safety Protection Compliant with Japanese Standards

  • Compliant with Japanese standards (certified by JIS and JET)

  • Reliable dustproof and waterproof performance (compliant with dustproof and waterproof level IP65)

  • Salt damage protection measures that can be safely used in heavy salt damage and salt-affected areas (compliant with C5-H salt damage protection)

  • Complies with other standards such as vibration, impact, climate, EMC, etc.


Maximized for Household Energy Consumption

  • Each circuit 14A can support large PV modules

  • Standard configuration with MPPT 2·3 independent circuit solar string inputs

  • Adopts ultra-wide range specifications, allowing even small amounts of sunlight in the early morning to be effectively utilized




SolaX Cloud Intelligent Management System Developed in-House by the Company

  • Maintenance management & operation via network with remote monitoring

  • 7 days × 24 hours data monitoring and maintenance (optional)

  • Diverse monitoring methods, Wi-Fi/LAN/4G (optional)

  • Equipped with output control function and anti-reverse current function. (Using anti-reverse current equipment)


High–efficiency Power Generation Capability of the Entire Circuit with MTTP

  • All circuits (3 strings) are compatible with MPPT, and different numbers of solar panels can be connected to each circuit

  • No impact on other circuits, each circuit generates power independently

  • Compatible with various solar modules under a wide range of input conditions

  • Available to connect up to 3 roof-mounted solar panels



Product Parameters

  • J1ESS-HB58/58-1
  • J1ESS-HB58X/115/173
  • J1ESS-HB58/58-1
    • SOLAR DC INPUT

      Maximum input voltage (DC)

      450V/circuit

      MPPT circuit number

      2 circuit

      MPPT tracking range (DC)

      70–450V

      MPPT Maximum efficiency

      99.9%


    • AC OUTPUT

      Power supply method

      Single-phase 3-wire type

      Rated output voltage

      AC101/202V

      Rated output current

      14.9A


    • BATTERY MODEL

      Type of battery

      Lithium iron phosphate battery

      Battery capacity

      5.8kWh/11.5kWh

      Waterproof and dustproof level

      IP65


    • GENERAL

      Dimensions (W x H x D)

      90.7 × 90.7 × 27.9 mm

      Total Weight

      150 kg / 247.5 (150+97.5) kg

      Working environment (indoor)

      -20°C to 70°C

      Cooling mode

      Natural air cooling


  • J1ESS-HB58X/115/173
    • SOLAR DC INPUT

      Maximum input voltage (DC)

      450V/circuit

      MPPT circuit number

      3 circuit

      MPPT tracking range (DC)

      70–450V

      MPPT Maximum efficiency

      99.9%


    • AC OUTPUT

      Power supply method

      Single-phase 3-wire type

      Rated output voltage

      AC101/202V

      Rated output current

      29.2A


    • BATTERY MODEL

      Type of battery

      Lithium iron phosphate battery

      Battery capacity

      5.8kWh/11.5kWh/17.3kWh

      Waterproof and dustproof level

      IP65


    • GENERAL

      Dimensions (W x H x D)

      90.7 × 90.7 × 27.9 mm

      Total Weight

      157 kg / 254.5kg (157+97.5) / 352 kg (157+97.5 ×2)

      Working environment (indoor)

      -20°C to 70°C

      Cooling mode

      Forced air cooling


Data Download

  • Datasheet
  • User Manual
  • Quick Installation Guide
  • Certification
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