Oasser Portable Air Compressor Mini Air Inflator Hand Held Tire Pump with Digital LCD LED Light Li-ion 12V 150PSI for Car Bicycle RV and Other Inflatables P1(Black)

Got it for my various vehicles that need air in their tires. 2 electric bicycles, 2 road bicycles, car, 900cc motorcycle and 50 cc scooter. It'll probably come in handy at my niece's soccer games too!It's compact and works perfectly. About 1psi give or take off the auto-feature. I was cautious the first few times but it gets it close!!!I'm not sure why there is a guy who said the Presta adapter was useless.There's a thread in the adapter so you would unscrew your presta, then screw the adapter on. It makes a little shroud around the presta with a little rubber grommet on the inside of the adapter. then you push the pump over the adapter and cinch down the top clamp and pump away!!! My tires on the road bike want 75-120psi and I got it to a comfortable 100psi in a few minutes....Similarly with my motorcycle it has spoked wheels which makes for tight headroom above the tire valve. This guy snuck in perfectly to pump the tires!!...Also it's nice and accurate when reading the existing PSI in the tube. After a winter in storage my motorbike was down to 26psi in both tires, well below the safe level of 42psi recommended. Got the tires pumped up nicely with this guy.............The ONLY negative I would say is that the carrying case doesn't really allow for the A/C adapter, car adapter, and pump. I misplaced the wall charger for a day so keep an eye on that little guy, it's easy to lose!!! I tried a different 12v charger but it didn't have the green/red charge light on it.... It would be nice if the pump had a charging indicator on it maybe a flashing battery symbol on the little blue LCD screen.Other than that, this is a great little pump!!! So convenient! I carry it in my backpack every time I ride anything :)

I have a corded air compressor at home to pump my car tires but want a portable one so that it is easier to carry in and out and this fits the bill. I really like its size and rechargeable battery build in so is very convenient. You pressed the + or - to set the desire PSI (default is at 30 PSI), connect the hose and then press the power button. It turns on its 2 LED light and starts the compressor and stops at the preset PSI. I did notice it seems to be 1 lb more which is okay in my book. A plus is that it runs fairy quiet. It came with a bag for the pump and a few other accessories to use on balls, air mattress and such, and another for the newer style bicycle valve. Since my intention is for my car's tires so I didn't test the other plugs. I did use it on my three cars and it worked fine pumping the tires to spec. I did notice it does not have a gauge for battery level. So I am planning to charge it every 2 weeks or so to have it ready. The manual said 6 months but I saw other reviewers said that would too optimistic. All in all it is what am I looking for, hopefully will last as only time will tell, but it does have a one year warranty. For the price and value, I would certainly buy it again.

Pros:1) Intuitive design that worked how I expected without needing a manual2) Cordless feature, which is why I bought this product3) Seems to have plenty of power4) Auto shut-off based on reaching target PSI5) Clamp-style nozzle that attaches to tire's valve stem seems to work better than most I've used over the years, though perhaps that is just because it is newCons:1) Like all pumps, especially smaller ones, it does run quite hot, thought this was as advertised2) The hose is extremely short, though this also was as advertised3) Gauge might be off by ~1 PSI, though perhaps it could be that the other gauge I was comparing it with is also offSuggestions for improvement:1) Optional longer hose, perhaps 20 or 24 inches would be ideal, so that one could set the pump on the ground while it is working. Otherwise I am afraid there would be too much pressure on the valve stem if I let this pump hang in mid-air. I would definitely pay an extra $10 to be able to get the extra longer hose.2) Auto shut-off when the temp gets too high or when the pump needs a rest to cool down

This is exactly what I wanted - a battery powered pump that is small and easy to use. I have used it about 10 times to top off my bike tires and once for a slightly low car tire. I doubt it could pump a set of 4 tires from 0 but that’s not what it’s for. If your says “hey, your front left tire is 4 lbs low” then this is the perfect answer. Screw on the Schrader valve stem, attach to the tire, and turn on the pump. I love being able to pre-set the desired pressure which ,on my car, is 45 psi. It runs until the tire hits that pressrue. I have double-checked it with other high precision gauges and it’s right on. I love that you don’t have to plug it in - it’s always a pain to run a cord from the cigarette lighter out the door, etc. I charge it once a month so it’s ready to go and it’s done everything I need. it also has LED lights that illuminate the stem you’re connecting it to. Just make sure you know how to turn off the lights - they don’t automatically go off and it will run down the battery after a couple of days. Great product.

Bought the middle of July. Fully charged it overnight. Put it in my truck. 6 weeks later, my tire pressure warning system (which is very sensitive and why I bought this) reported a tire 2lbs low. I pull out my new handy dandy inflator.....it is dead. No charge. It took stops at 3 gas stations to find a working inflator. The whole reason I wanted to carry my own. I get home, plug it in and the charge light went from red to yellow within 5 minutes and green (charged) in 10. I tried it out on another car with a low tire. I set the desired psi. It stopped when it supposedly got there, then the display immediately showed a lower pressure. The tire didn't leak. The inflator crapped out before it actually got to the set psi. I thought the calibration must be off so I raised the psi and tried again. It wouldn't run. Pushing the button only turned the flashlight on. And of cours, 2 weeks outside of the Amazon return window. DO NOT BUY