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Hidden Gem Fortress Power Evault [max] 18.5kwh Lithium Ferro Phosphate Battery | 10-year Warranty Secure Checkout [w6etEM4y]

$93.99 $300.99 -69%

Fortress Power eVault [MAX] 18.5 Kilowatt-hour Lithium Battery StorageThe newest innovative Lithium Iron Phosphate battery from Fortress Power is the eVault Max 18.5 kWh. An all-in-one solution for your residential and commercial needs. Scalable up t

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Hidden Gem Fortress Power Evault [max] 18.5kwh Lithium Ferro Phosphate Battery | 10-year Warranty Secure Checkout [w6etEM4y]

Fortress Power eVault [MAX] 18.5 Kilowatt-hour Lithium Battery Storage

The newest innovative Lithium Iron Phosphate battery from Fortress Power is the eVault Max 18.5 kWh. An all-in-one solution for your residential and commercial needs. Scalable up to 370kWh with serviceable top cover access to make installation of this battery simple and worry-free. The eVault Max is AC/DC coupled to solar arrays and works for many applications that require solar storage, including Off-Grid, Back-Up power, self-supply, and Peak Charge Reduction just to name a few.

Not only is the new fortress eVault Max 18.5 kWh battery safe, long-lasting and affordable, but is also equipped with a brand new LCD screen that displays voltage, current, state of charge, and power output and operating status. The built-in smart battery management system integrates multilevel safety concepts for excellent performance.

Latest Technology: We use the safest, environmentally friendly prismatic Lithium Iron Phosphate cells.

Lowest Cost per cycle: Competitively priced and easy to install with >98% round-trip efficiency.

Flexible and Scalable: Expandable from 18.5 kWh to 370 kWh for both residential and commercial buildings

Long-Lasting: 10-year warranty; up to 6,000+ cycles

Smart and Advanced: The smart relay-based Battery Management System, supports closed-loop communication with various hybrid inverters for best performance - scalable up to 20 units

Fortress Power eVault MAX 18.5 Specifications:

  • Total Energy: 18.5 kWh
  • Nominal Voltage: 51.2(48)V
  • Voltage Range: 45-58.4 V
  • Recommended Charge Current: 150 Amp
  • Max. Charge Current(Continuous): 180 Amp
  • Max. Discharge Current(Continuous): 180 Amp
  • Recommend Storage temperature: 50 to 95 F
  • Charge temperature: 32 to 113 F
  • Capacity: 370 Amp-hour
  • UL 9540 Listed
  • Dimension(H x W x D): 42.2" x 20.3" x 20.3"
  • Weight: 520 lbs

Fortress Power eVault MAX 18.5 Benefits:

    • Safe Lithium Iron Phosphate Technology (LiFeP04)
    • High durability and long-lasting
    • Closed loop communication with inverters
    • Scalable from 18.5kWh-370kWh
    • Intelligent digital processor based BMS
    • Advanced cell level monitoring and balancing

    Technical Features:

    • Large touch screen LED display
    • Sleek IP55 industrial-grade aluminum
    • Front-serviceable cover
    • Transportable on wheels

    Downloads And Specs:

    What Our Customers Say

    February 5, 2026

    Absolutely no complaints!

    A really nice product. A big thank you.

    - Annie F..

    February 5, 2026

    Absolutely no complaints!

    A very polished and effective tool.

    - Cesar J..

    February 5, 2026

    Absolutely no complaints!

    A product that has become a true favorite.

    - Steven W..

    Write a Review

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