EVERVOLT home battery storage: Dependable power, with or without solar Whether paired with solar or used independently, the renewable energy stored in an EVERVOLT home battery system serves as a reliable backup against unpredictable utility grid fluctuations and weather-related events. Keep essential appliances running longer and maintain your lifestyle during unforeseen circumstances. Our EVERVOLT battery storage systems are backed by a comprehensive 12-year warranty from Panasonic, including coverage for labor. Learn More about Panasonic EVERVOLT.