Zun Dian 4-in-1 Multifunctional Battery Jump Starter The 4-in-1 multi-function car jumper starter air compressor portable (jump starter for vehicle +260psi air compressor tire inflator+12V DC port to power your vehicle-mounted equipment+5V2.1A USB port to charge your USB devices), is a must for outdoors, making your self-driving trip hassle-free.Compared with lithium batteries, although they are lightweight and small, lead-acid batteries have higher safety and stability, are not prone to explosion, and can play a good role in extremely bad weather (-10℃ ~ 60℃( -4℉ ~ 140℉)).PLEASE NOTICE: If in cold weather, the battery may be frozen if it can not be started. At this time, the battery is actually charged, but it is recommended that you can charge the jump starter before use, so as to activate the battery inside. NOTE: If you missing the charger adapter, you can search B0CFVFTKQX to buy. Car Jump Box Battery Starter for Outdoor/Indoor Use With10000mAh apower bank could charge your kinds of USB devices quickly with a 5V 2.1A USB ports.A DC port cigarette lighter for your electronic devices and auto devices output when you travel outdoors. Car Jump Starter with Air Compressor Jump box with air compressor tire inflator, 260 PSI high flow air compressor for inflating tires and accessories, also comes with 3 Air Nozzle Adaptors for most Inflatables, suitable for bicycles, cars, trucks, motorcycles, boats, balls, and Other inflatables. Meet your family's daily needs, convenient and portable. Work at Extremely Weather PLEASE NOTICE: If in cold weather, the battery may be frozen if it can not be started. At this time, the battery is actually charged, but it is recommended that you can charge the jump starter air compressor before use, so as to activate the battery inside.