Solar batteries are the great device that you can add to your solar power system to store the excess electricity generated by your solar panels. You can then use that stored energy to power your home at times when your solar panels don't generate enough electricity, including nights, cloudy days, and during power outages.The specially designed L Series Solar batteries are C10 rated deep cycle batteries that provide a longer lasting power back up for your home. L Series batteries comes with 3 years of warranty