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Fortress Power - eVault Max 18.5kWh LFP Battery

SKU eVault Max 18.5
Original price $10,270.00 - Original price $10,270.00
Original price
$10,270.00 - $10,270.00
Current price $10,270.00

Fortress Power - eVault Max 18.5kWh LFP Battery

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 a 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.

  • Overcharge and Deep Discharge Protection
  • Over-heat protection
  • Over Current Protection
  • Cell Monitoring and Balancing
  • Voltage and Temperature Monitoring
  • Closed-Loop Communication with Inverters
  • Optimized Internal Structure – Easily Serviceable
  • Handles More Surge Capacity from Inverters


al Energy (kWh) 18.5
Capacity[Ah] 360
Nominal Voltage [V] 51.2 (48)
Voltage Range[V] 48-55
Recommended Charge Current [A] 150
Max. Charge Current (Continuous)[A] 180
Max. Discharge Current (Continuous)[A] 180
Max. Pulse Current (for 10 sec) [A] 200
Charging Temperature[F] 32 to 120
Discharging Temperature[F] 14 to 77
Dimension [H xW x D, inch] 20.3 x 20.3 x 42.2
Weight[lbs] 520
Enclosure Protection Rating IP55
Mounting options Floor standing
Certificates UL 1642, UL1973, UL9540
Warranty 10 Years
Scalability Maximum 20 in Parallel (370 kWh)
Communication CAN/RS485
High Current Circuit Breaker 250A
Efficiency >98%




eVault MAX Data Sheet
SPANISH eVault Max Data Sheet
SPANISH eVault Max Brochure

Installation Guides / Warranty:

Quickstart Guide
Installation Manual
Inverter Guides (how to configure your inverter/charger)
Battery Firmware Download


UL9540 Test Certificate
UL9540a Large Scale Fire Test Report
Application Note on Wall Spacing + Drywall Type