The CFE Lithium-ion 5.1Kwh is a powerful solar battery that stores energy from your solar system and provides reliable energy storage for your home. With a long life cycle and a low self-discharge rate, this battery is perfect for storing energy for long periods of time. It has a high-efficiency rating and is simple to install and maintain. The CFE Lithium-ion 5.1Kwh is backed by a 2-year warranty, ensuring you have peace of mind that your solar power storage system will be reliable for years to come.