eVault Classic 18.5kWh LFP Battery
The original Fortress Power high-capacity battery—trusted for dependable performance, safety, and efficiency across thousands of installations.
eVault Classic 18.5kWh LFP Battery
The original high-capacity battery from Fortress Power
The Fortress Power eVault Classic 18.5 kWh is a robust lithium iron phosphate (LFP) battery engineered for both residential and commercial energy storage systems. With >98% round-trip efficiency, integrated safety protections, and a scalable design up to 222 kWh, the eVault Classic delivers cost-effective energy storage with a 10-year warranty. While no longer compatible with the newer eVault Max, the eVault Classic continues to offer reliable power and easy integration for retrofit and new projects alike.
Applications
Residential
Commercial
FEATURES
PRODUCT INFORMATION
| General | |
| Total Energy (kWh) | 18.5 |
| Capacity[Ah] | 360 |
| Nominal Voltage [V] | 51.2 (48) |
| Voltage Range[V] | 48-55 |
| Recommended Charge Current [A] | 100 |
| Max. Charge Current (Continuous)[A] | 170 |
| Max. Discharge Current (Continuous)[A] | 180 |
| Max. Pulse Current (for 10 sec) [A] | 200 |
| Charging Temperature[F] | 32 to 113 |
| Discharging Temperature[F] | 32 to 113 |
| Recommended Storage Temperature [F] | 50 to 95 |
| Dimension [H xW x D, inch] | 38.8 x 19.2 x 21.3 |
| Weight[lbs] | 476 |
| Enclosure Protection Rating | IP21 |
| Mounting options | Floor standing |
| Certificates | UL 1624 |
| Warranty | 5/10 Years |
| Scalability | Maximum 12 in Parallel (222 kWh) |
| Communication | CAN/RS485 |
| High Current Circuit Breaker | 250A |
| Efficiency | >98% |
