This all-in-one car emergency power supply combines a high-capacity lithium-ion jump starter, a 150 PSI digital air compressor, and a portable power bank in a single compact unit—ideal for roadside emergencies and daily vehicle maintenance. Equipped with smart safety protection (over-current, over-voltage, short-circuit, and reverse-polarity prevention), it safely jump-starts 12V gasoline or diesel vehicles up to 7.0L engine displacement in seconds. The built-in ultra-quiet brushless motor delivers rapid inflation for tires, bikes, sports balls, and inflatables, featuring an intuitive LED pressure display, auto-shutoff at preset PSI, and three nozzles for versatile use. With a 20,000mAh battery capacity, it also charges smartphones, tablets, and other USB devices up to 4–5 times. Lightweight (under 1.8 kg), rugged ABS+PC casing, integrated LED flashlight (SOS/strobe modes), and clear English interface make it reliable, user-friendly, and travel-ready. Includes jumper cables, air hose, carry pouch, and micro-USB/USB-C charging cable. CE, RoHS, and FCC certified—engineered for durability, efficiency, and peace of mind on every journey.