Works well. We bought this compressor to keep our truck camper and Jeep tires and spares inflated to the proper PSI. The Viair 450P is 100-percent duty cycle. Most portable consumer-grade air compressors are not. The 450P can be used continuously for about an hour, and then needs to cool down for about 15-minutes. Be careful as some parts of the compressor get mighty hot and will definitely burn your hide.The Viair 450P connects to your vehicle's battery. Make sure the engine is running as the unit has up to 23-amps draw for the compressor DC motor.The compressor is very useful to reliably air up in a timely fashion and to not overheat or damage itself. It is also good for inflating toys and sports equipment. It can also be used to purge the fresh water lines, water heater, pump, and faucets for winterization. It should be used with an air regulator (30 PSI).One of the best things about the 450P is the synthetic rubber base. The non-skid bottom and feet also limit sliding on most surfaces, and will not damage most surfaces. It works well in sand, on firm mud, and on wet grass, asphalt, and concrete. The base and feet are easy to clean and keep the compressor upright and stable.On the subject of compressors, I have something of a warning story. When I was a kid, I heard about a man that needed to air up a large farm tractor tire. He had a small portable air compressor with a sufficiently large battery, but the compressor output over time was low volume and slow to air up anything. So, instead of staying with the compressor, he connected it to the almost totally deflated tire and then went off to check on other things. He got distracted and forgot to return. I was told the resulting exploding tire was pretty loud, but nobody got hurt.