Here is the Fortress Power eVault 18.5kWh battery storage solution (and it's scalable up to 222kWh!!). Built with safe, high energy density, prismatic Lithium-Iron-Phosphate cells, this battery produces power that you can depend on. The smart, relay-based Battery Management System (BMS) supports closed-loop communication with numerous 48V hybrid inverters. Additionally, the BMS monitors and balances the voltage and temperature of each individual cell to maximize reliability and longevity. With a slick, easy to read LCD screen, the Fortress Power eVault 18.5kWh Lithium Iron Phosphate Battery provides critical information regarding the state of your battery.