Review on High Pressure Dual Stage Electric Air Pump for Inflatable Stand Up Paddle Boards, Boats, Kayak - 20 PSI, 12V DC Car Connector by Brian Vasquez

This thing is INGENIOUS! Plug it into your cigarette lighter and watch it go. Choose the desired pressure and the pumps will reach the desired level and stop by themselves. Killer. I wish I had bought this many years ago. Edit - Have been using it for almost a year now and it's still great. Would definitely buy again. The first stage is fairly quiet, the second loud, but that's to be expected. It takes about 5 minutes for my SUP to reach 10psi.