Battery Charger,E-Bike Smart Charger,Golf Cart Battery Chargers,Li-Ion Battery Charger HuiZhou Superpower Technology Co.,Ltd. , https://www.spchargers.com“Extended warranty†is the abbreviation of “extended warrantyâ€, which is equivalent to a new “insurance†for consumers to repurchase for home appliances. It can enjoy 1 to 4 years in addition to the “three guarantees†specified by the state and the factory. Unequal warranty service. With the introduction of this new warranty service, there are different among consumers.