Lithium-ion batteries store the generated energy from a PV system into AC or DC current for later use. The batteries are mostly made up out of high-quality graphite electrodes, although iron or cobalt are sometimes used as well. Lithium-ion solar batteries have a long lifespan and can store solar energy for a long period. You are looking for an AC or DC battery for your new array? Or as an exchange for a faulty battery in your existing PV system? Find the right battery for you on the SecondSol PV marketplace.