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    Fortress eVault Max 18.5 kWh Lithium Battery Storage

    Fortress eVault Max 18.5 kWh Lithium Battery Storage

    $6,476.00 USD
    $6,476.00 USD
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    Specification

    • SKU:PES-SPS-SIV-0244
    • Documents:

      Datasheet
    • Height: 42.2
    • Length: 20.3
    • Width: 20.3
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    Product Description

    • Fortress eVault Max 18.5 battery – 18.5 kWh 48 V Module

      The Fortress eVault Max 18.5 battery delivers 18.5 kWh of safe, long-life LiFePO₄ storage at 48 V. Its compact, all-in-one tower design scales up to 370 kWh, bringing whole-home and light-commercial backup within easy reach.

      Key Features

      Massive single-unit capacity

      At 18.5 kWh, one Fortress eVault Max 18.5 battery can back up critical loads on its own—no external combiner cabinet required.

      8 000-cycle longevity

      Tier-1 prismatic LiFePO₄ cells, plus an intelligent BMS, give the Fortress eVault Max 18.5 battery 8 000 cycles at 80 % DoD.

      Installer-friendly top access

      Serviceable top cover and built-in wheels cut install time while keeping the Fortress eVault Max 18.5 battery compact and indoor-safe.

      Specifications

      Fortress eVault Max 18.5 battery – complete technical data
      Nominal voltage 51.2 V DC
      Nominal capacity 360 Ah / 18.43 kWh
      Round-trip efficiency 98 %
      Recommended discharge (continuous) 180 A (9.2 kW)
      Surge discharge (5 s) 250 A (12.8 kW)
      Cycle life 8 000 cycles @ 80 % DoD
      Depth of discharge Up to 100 %
      Dimensions (L × W × H) 20.3 × 20.3 × 42.2 in (515 × 515 × 1 073 mm)
      Weight 520 lb (236 kg)
      Operating temperature (discharge) −4 °F – +140 °F (−20 °C – +60 °C)
      Ingress protection IP 55
      Communications CAN & RS-485
      Certifications UL 1642, UL 1973, UL 9540, UL 9540A, UN 38.3
      Warranty 10 years

      Installation & Warranty

      A 10-year manufacturer warranty and IP 55 aluminum enclosure ensure the Fortress eVault Max 18.5 battery delivers reliable whole-home power for years to come.