Moduler Battery Design: By sharing a battery module, our kit can maximize your cost savings, and the shared battery module makes it more expandable and can perfectly match dozens of our products. Air Compressor: Equipped with 15000mAh rechargeable battery. It can be used without connecting a cable. To prevent the product from overheating, use it for 10 min to turn off and restart. Ideal for inflating cars, motorcycles, bicycles, balls and other inflatables. Auto Shut Off: Use the the control buttons on the our tire inflator to easily select your desired pressure, simply connect the air hose to your car and press the“Start” button on the electric air pump. Once the correct pressure has been reached the set point, it will automatically shut off. It is very convenient to use at anywhere. Inflate Anything: Includes 3 attachments and air hose. Use the valve on cars, SUVs, motorcycles, and bicycles. You can use those attachments to finish the inflation easily. Easy to Store: BAYU car smart kit comes with a small bag, which is very portable, it can be carry and store easily in your car. It can be used as an emergency car device in travel,as car accessories, and work, to inflate tires and an emergency power supply for phones.