The Rack Mounted 5kWh-20kWh battery pack is a lithium-ion 48V/51.2V LiFePO4 solar energy storage battery. Its key features include a capacity of 100Ah, rack-mountable design, and a wide range of storage options from 5kWh to 20kWh. The benefits of this battery pack include efficient solar energy storage, reliable power backup, and easy installation. Its unique selling points are its high energy density, long lifespan, and compatibility with various solar energy systems.