eVault MAX 18.5 kWh
Proven Reliability. Maximum Scalable Power.
eVault MAX 18.5 kWh
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.
Key Features
High Capacity: Offers 18.5 kWh storage, scalable up to 370 kWh, suitable for large residential and commercial energy needs.
Long Cycle Life: Boasts 8,000 cycles at 80% depth of discharge (DoD), ensuring extended battery lifespan.
Efficient Power Output: Maintains 98% efficiency at 0.5C, making it highly effective for energy storage and delivery.
Advanced Battery Management: Features an intelligent digital BMS with cell-level monitoring and balancing for optimal performance and safety.
Wide Temperature Range: Operates from -4°F to 140°F for discharge, suitable for varied climates.
Certifications: Compliant with UL1642, UL1973, and UL9540 standards, ensuring high safety and reliability.
Ease of Installation: Designed with top-cover access, allowing straightforward installation and servicing.
LCD Touch Display: Comes with an LCD screen for monitoring performance metrics directly on the unit.
Closed-Loop Inverter Communication: Supports seamless integration with inverters for efficient energy management.
Monitor and control your eVault MAX Anywhere and Anytime!
✅ Monitor Performance of Each Battery
✅ Update Firmware Over The Air
✅ Participate in Virtual Power Plant Programs
Easy to Pair with Your Favorite Inverters with a simple click
Video Library
eVault MAX Video Library
Make your home your Fortress with Uninterrupted Clean Power
Solar Energy, Grid Energy, Battery Storage, Generators and More.
Seamlessly integrating with our Fortress Power Envy Inverters, the eVault MAX 18.5 kWh batteries enhance your system’s performance. Perfect for both home and business. Whether you’re seeking to reduce your environmental impact, energy costs, or rely on a steady power supply during outages, the eFlex MAX is your go-to solution. Make the smart switch to a greener, more efficient energy system today with our innovative battery technology.
For firmware updates and details about firmware releases, please visit our Firmware Support Page
| Total 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% |
Related Products
The Fortress Power eVault MAX 18.5kWh Battery plays nicely with the following products
Envy True 12 Inverter
True 12kW Whole Home Solar Storage Inverter
Envy 8k / 10k Inverter
8k / 10k Whole Home Solar Storage Inverters
Guardian Monitor
Monitor and Control your Fortress Power System Remotely