: Generally speaking, instantaneous starting current of devices with built-in motor (such as car vacuum cleaner, cooler and inflator/ air pump) is much higher than the rated current. So, we recommend you to buy ALITOVE 12V 10A or 13A power supply (ASIN: B078RZQ9WY, B0CJC498HS ) for 12V 5A car vacuum cleaner, cooler and inflator/ air pump. Specifications Input: 100~240V 50/60Hz; output: 12V DC, 5A 60W max; Works well with car devices that draws less than 5A, such as 1A, 3A, 4A. Please dont use this power adapter to power devices over 60W for a long time. Otherwise, the lifespan will be greatly shortened. With a 8ft extended total cord length to reach a wide range. Multiple Safety Protections All the power supplies are put through rigorous quality control procedures to ensure safe, reliable operation for years to come. Built in multiple safety protections, such as overload cut-off, over voltage cut-off, over temperature cut-off, short-circuit cut-off. Wide Compatibility Works with almost