AstroAI Tire Inflator Air Compressor Cordless Car Tire Pump with 20V Rechargeable Li-ion Battery 150 PSI Portable Handheld Air Pump with 12 V Car Power Adapter for Cars Motorcycles LS40791（C1）

Its too bulky to stow on my motorcycle, but my full size SUV accommodates it nicely. The quick-connect attaches securely, and is nice and snug - no signs of air leakage once locked. It also releases cleanly with very little air escaping. The LED lights surrounding the hose provide good illumination. The various modes are basically pressure presets; expect to have to adjust them for your specific needs. It does remember the last pressure setting for each mode, which is nice! The auto-shutoff is a very welcome (albeit common) feature for inflators nowadays. I compared the pressure readings to another digital tire pressure gauge that I have; this pump tended to read a couple of tenths above the other pressure gauge. I would consider that within an acceptable margin of error. My SUVs all-terrain tires were all at 30 psi. I first used the pump, on car voltage (with engine running, so about 14.5V), and raised a tire from 30 to 35psi in 4 minutes. I then switched to the included battery (18.5V), and raised the next tire from 30 to 35psi in half the time - 2 minutes. I continued on that second tire up to 40 psi, then raised the third tire from 30 to 40psi in 4:30; fourth tire from 30 to 40psi in 5 minutes. There was only enough juice left in the battery to raise the first tire from 35 to 38psi before the battery ran out. So, the pump does run better on the rechargeable battery than on car voltage; makes sense, since the rechargeable batterys voltage is higher. The battery capacity is very decent; I estimate that you could easily fully inflate one flat car tire with maybe a little bit of juice to spare. All in all, I am pleased with this pumps performance. The battery adds great versatility if youre away from an external power source. I do recommend this product for your consideration.

We used this to fill up our car tires. My husband had his old tire pressure measuring tool and checked the pressure, then he put this machine on the tire and it read the exact same pressure. Then he set the desired pressure and filled the tire. He measured again with his analogy tool and again, the pressure was exactly the same. This was easy to use and fun. It has two different power options -- cigarette lighter or charging the battery via USB. We charged using USB and it held its charge and worked great.

The portable tire inflator is very light weight. It comes with a rechargeable battery and a battery that plugs into the cars lighter port. Both slide off very easily. The instructions are easy to read and understand. There is a diagram that tells where everything is. Upon taking the inflator out of the box for the first time and just messing with it without looking at the instructions, it was really hard to tell what was the on/off button and what the other buttons were for because they are black on black. Some contrasting color would have helped with that, also if you are trying to use it in the dark you wont be able to read what button is what. However it is pretty self explanatory whatever button you chose. One turns on a flash light which is wonderful, the other is the on/off button, two are for more or less air and the last one is settings. Overall I am very pleased with the item. A carrying case would have been nice to put everything in too.

I got in my truck yesterday to pick up a take-out sandwich and go visit a friend. My indicator panel told me I had a low air tire. I realized it was time to test my new tire inflator. I chose to use the car adapter because I felt the battery would probably work, but I suspected more than one tire was low, and this is a full-sized pickup truck, not a little car so there’s a fair amount of weight on those tires. I will test the battery option sometime when I am not so hungry, perhaps on my air mattress. So, the cord reached just far enough…barely. I do wish the cord were just a foot longer for the adapter. That, however is my ONLY complaint. With the truck running, I got plenty of power to add 10 pounds to one tire, 3 to another, and the front tire needed 7. The truck’s digital panel tells me how much it reads in each tire, and when I was finished with all 4 tires, the numbers were perfect. The digital readout on the machine doesn’t work perfectly as I pumped, but it’s good enough. The actual tire pressures were where they were supposed to be when I was done. Doing all 4 tires only took maybe 15 to 20 minutes which I considered to be amazing. It wasn’t a fast fill up, but it was efficient and did the job right there in my driveway. I told my friend about it and now he wants one for his truck. This little compressor worked like a charm and could definitely get me out of trouble out on the highway someday. I’m so happy I have it. What a great tool. The photos in the description are accurate and show the product very well. This is something almost everyone should have in their vehicle, but especially those of us with older trucks that are getting the leaky rim syndrome. It was super easy to use…actually easier than the gas station air pumps for me. This woman calls this an excellent product.

So my old air compressor I used to carry around was not digital, was much bigger, and kind of annoying to lug around. This, by comparison, is smaller, digital, and fairly easy to use. The fact that it comes with both a battery and an auxiliary socket power adapter is a nice bonus incase the portable battery happens to be dead. Running on battery power, I can just easily walk to each wheel without being tethered by a lengthy power cord to the inside of a car that has to be on. I used it to check my tire pressure and as it turns out, the dealer (who recently did a TPMS sensor recall on my car) had overinflated my tires. Not having to have a separate tire pressure gauge and compressor is also a nice plus (the pressure sensor in my old compressor was very inaccurate) and the quick connect/release is a blessing. Overall, I really like the design and function of this and give it high marks. It has earned a spot as the permanent replacement for my old compressor.

This handheld air compressor is seriously the coolest. My husband has a large air compressor in the garage but it feels intimidating to use, and sometimes I cant get whatever it is I need to fill to the garage. This handy compressor is so user friendly and easy. It comes with different attachments so you have what you need to fill a tire, ball, or whatever. The rechargeable battery is so convenient and if it happens to be dead when you need to inflate a car tire, you can plug the attached power cord into the lighter socket and youre good to go. Also, you could charge the battery with the provided USB-C cord if you are set up that way in your car, but it will take a little bit (particularly if youre in a hurry). The settings are simple to understand, as well. Theres a screen that shows four pre-set options for bicycle, motorcycle, car, ball and you can also pick from PSI, Bar, kPa, kg/cm2. If you dont want to use a pre-set option, you can either set your own pressure limit, or just press the button and fill until you want to stop. When using a pre-set option, or setting your own pressure, it will automatically stop when it fills to the pressure its set at. If its dark outside, there is a light button to illuminate the area so you can easily connect to the valve. Its pretty lightweight, considering it has a battery attached to it, and easy to handle. It feels durable and well made; I appreciate how easy it is to use every time I need it.

I like this tire inflator so much that I bought a second one for my SUV. I have a big expensive compressor I keep in my RV, but it has to be connected to the battery of the RV which is great if I have to top off all the tires. If I just want to top of a tire or two, this small tire inflator is perfect. Much quicker as it has a battery, or you can use the cigarette lighter adapter. There are 4 modes and the PSI is saved, so I have one set for the RV, one for my car, one for my motorcycle and one for my bicycles. I quickly filled one RV tire from 66psi to 80psi and the inflator didnt feel very hot. Very happy with it.

I didnt realize that such a tool existed! I have four cars and on any given week at least one of them has a tire that could be topped up to proper pressure. This is the perfect tool for getting this job done! It works flawlessly. There are a variety of modes depending on whether youre inflating a bicycle, car, etc. It also can change to different pressure units. I LOVE this pump!

Works but a bit slow handy and portable

The AstroAI Cordless Tire Inflator Air Compressor is just this side of too big to actually be convenient for emergency situations in a small vehicle. That being said, this thing is a beast! It works incredibly well and does have the power to inflate large vehicle tires relatively quickly. From the picture presented I assumed it would be about the size of a powered screwdriver, its larger then that by quite a bit. Its also not light. I do very much appreciate the attachments that are included. There are different tips for a variety of uses and it comes with a cigarette lighter adapter incase the battery pack dies while youre out you have multiple ways to get the job done.