The Best Automatic Cordless Tire Inflator

This cordless inflator earned The Best rating from the Hammacher Schlemmer Institute because it automatically inflated tires faster and with more precision than other models. With a 19" threaded hose that ensures a proper seal with tire valves, it inflated a mountain bike’s tire from fully deflated to 35 psi in 10 seconds, a car’s tire from 28 psi to 35 psi in 50 seconds, and a high-pressure tire from 58 psi to 68 psi in 2.8 minutes. Other inflators took 18 seconds, 100 seconds, or 3.5 minutes to inflate the same tires, respectively. Its digital pressure gauge provided the most accurate inflation of any unit tested, varying by no more than 2 psi while others were off by 4-5 psi. A squeeze and release of the locking trigger begins inflation; it automatically shuts off when it reaches a desired tire pressure. Integrated LEDs illuminate tire valves while in operation. Its 20-volt Li-ion battery provides up to 20 minutes of continuous cordless operation from a 2 1/2-hour charge using the included AC adapter. Can also be powered directly (but not recharged) by an included 11'-long DC cable. Includes ball needle, bike valve, air tap, and tool bag. 10 3/4" L x 10" W x 4" H. (5 lbs.)