Solar batteries are energy storage devices that capture and store electricity generated by solar panels. They allow homeowners and businesses to use solar energy even when the sun isn't shining, such as during the night or on cloudy days. This helps maximize the use of renewable energy and can reduce reliance on the grid. These batteries come in various types, including lithium-ion and lead-acid, each with different capacities and lifespans. By storing excess energy produced during the day, solar batteries can provide backup power during outages and help manage energy costs by using stored energy during peak demand times.