A home solar battery stores energy produced by solar panels and makes it avaliable for use when sunlight is insufficient. It is usually in the form of lead-acid or lithium-ion batteries, with lithium-ion having more benefits like better efficiency, increased energy density, longer lifespan, and higher efficiency. These batteries can be synced with the home’s electrical systems to provide backup sustenance when power is out. This reduces reliance on the electrical grid leading to lower costs and greater energy self-sufficiency.