Warranty
The SunPower Sunvault 13 comes with a 10-year manufacturer's warranty. However there is a throughput clause of 4,000 cycles or 38 MWh energy throughput cycle, that ends the warranty when either metric is met before the ten years. SunPower guarantees the Sunvault 13 will have 70% of its original 13.0 kWh capacity, at the end of the tenth year. Sunpower’s SunVault Storage13 is comparably priced to similarly equipped batteries reviewed for 2023 and backed by an industry standard warranty.
