A mini air compressor is a very valuable tool to have on hand. There are plenty of uses for a mini air compressor that can save you a lot of time and manual labor. Keeping one in the trunk of a car or a camper will prove to be a very wise thing to do. What Is Mini Air Compressor? A mini air compressor is a small version of a portable air compressor. They have a small electric motor that compresses the air in a small attached cylinder tank. This type of ultra portable compressor can be plugged into a 12V car system for on-the-go repairs or inflation. Uses for Mini Air Compressor Sporting enthusiasts, drivers, campers, and bike riders can find an almost unlimited amount of use for a mini air compressor. They can inflate bike tires, inflatable boats, or even car tires if you have a flat while driving. Because they can be powered through a cigarette lighter in your vehicle, they are incredibly versatile and a lifesaver in some instances. Not for Heavy Duty Use While the mini air compressor is a great convenience and even a must in some situations, it is not for heavy duty use. Powering an impact wrench, air nailer, or grinder should be done with the use of a portable air compressor at the least.