Fortress Power LLC eVaultMax

The Fortress Power LLC eVaultMax is a home battery from Fortress Power LLC. It stores 18.43 kWh in Lithium Iron Phosphate cells. Rated AC power 9.2 kW. Listed and verified: UL 1973 and UL 9540. Sold in United States.

Specifications

Capacity: 18.43 kWh
Battery chemistry: Lithium Iron Phosphate
Rated AC power: 9.2 kW

Product details

Product type: Home battery
Brand: Fortress Power LLC
Category: Home Battery Storage
Sold in: United States
Listed in: California Energy Commission

Models (1)

Model	Nominal capacity	Usable capacity	AC power	Certificate
eVaultMax	18.43 kWh		9.2 kVA

Certifications

Certification	Market	Status	Reference	Valid until
UL 1973	United States and Canada	✓ Verified 19 October 2026	Intertek
UL 9540	United States and Canada	✓ Verified 19 October 2026	Intertek

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