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Fortress Power eVault EVAULT-18.5KW 18.5kWh 360Ah 48VDC Lithium Iron Phosphate (LiFeP04) Battery

Fortress Power eVault Max EVAULT-18.5KW 18.5kWh 360Ah 48VDC Lithium Iron Phosphate (LiFeP04) Battery

  • This item requires Freight Shipping. Freight rates start at $287.50

Our Price: $10,270.00

Product Code: EVAULT-18.5KW

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Description Document(s)

Fortress Power eVault Max EVAULT-18.5KW 18.5kWh 360Ah 48VDC Lithium Iron Phosphate (LiFeP04) Battery

Manufacturer Part#: EVAULT-18.5KW

The newest innovative Lithium Iron Phosphate battery from Fortress Power is the eVault Max 18.5kWh. 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.

  • Expandable from 18.5kWh to 222kWh for both residential and commercial buildings
  • Competitively priced and easy to install with >98% round-trip efficiency
  • 10-year warranty
  • Overcharge and deep discharge protection
  • Over current protection
  • Over-heat protection
  • Voltage and temperature monitoring
  • Cell monitoring and balancing

This item cannot ship UPS Ground. Please select the "FREIGHT SHIPPING QUOTE ONLY” option at checkout. Once we process your order, we will contact you with the shipping options. For questions, please contact us at 800-942-2424 ext 1.


Full data sheet can be found in the Document(s) tab above.

Electrical Specifications
Nominal Voltage 51.2V
Nominal Capacity 360Ah
Rated Capacity @ 0.5C (180A) 18.43 kWh
Resistance <10 mΩ
Communication Protocol CAN / RS485
Efficiency (at 0.5C) 98%
Cell Self-Discharge <1 % / Month
Maximum Allowed Modules in Parallel 20 (370kWh)
Depth of Discharge Up to 100%
Warranty 10 Years
Cycle Life 8,000 (@ 80% DoD)
Charge Specifications
Recommended Charge Current 150A
Maximum Charge Current 180A
Recommended Charge Voltage 54.4V
BMS Charge Voltage Disconnect >56V
Discharge Specifications
Recommended Continuous Discharge Rate 180A (9.2 KW)
Peak Discharge Rate 230A (12 KW 30 Min)
Maximum Surge Power Rate 250A (12.8 kW 5 sec)
Recommended Low Voltage Disconnect 48V
Battery Low Voltage Protection <46V
Battery recovery Voltage 47V
Mechanical Specifications
(L x W x H)
20.3 x 20.3 x 42.2 in
515 x 515 x 1073 mm
Weight 520 lbs | 235.87 kg
Terminal Type M10
Ring Terminal Size 1/2" or larger
Terminal Torque 7.0 – 7.7 Nm
(5.1 – 5.7 ft-lb)
Case Material Industrial Grade Aluminum
Enclosure Protection IP65
Cell Type Chemistry Tier 1 Automotive Prismatic - LiFeP04
Compliance Specifications
Certifications UL1642, UL1973, UL9540, UL9540A, CEC, SGIP
Shipping Classification UN 38.3. UN 3480, Class 9
Basic Charging Profile
Bulk + Absorb Charge 54.4V
Absorb Time 60 minutes
Float Charge 54V
Inverter Charging 2 Stage / No Float
Equalization No equalization (typical)
54.6V for 10 seconds (rare)
Temperature Compensation None

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