Performance warranty defined for the ESS: 100% DOD, 60% capacity at EOL, operating temperature range of -30°C~+30°C, The number of cycles is defined according to the working conditions of each area. Therefore, such information is provided for reference purpose only and constitutes neither an offer nor an acceptance. Huawei may change. Since 2006, Solar Insure has helped solar installers overcome industry challenges with our unmatched solar and storage warranty solutions paired with our 5-star customer service. For batteries and inverters, look for at least 10 years—and make sure warranty terms (like cycle limits and pro-rata conditions) are clearly explained. PVMARS provides a complete turnkey photovoltaic energy storage system solution.