Solar panels collect energy from the sun and turn it into electricity, which is passed through an inverter and converted into a form you can use to power your home. Simply put, a charged battery stores electrical energy in chemical form for later use. The vast majority of residential solar energy systems are connected to the utility grid. A solar battery backup will store this energy and power your home during blackouts caused by severe weather or power outages. The current state-of-the-art is a Lithium-Ion Battery. It is the most popular battery for homeowners due to its superior performance and reliability.