The X9 was surprisingly fast for this little contraption. This thing is very easy to carry and store in a small space. Easy to see the numbers, Can adjust for auto shut off pressure. All lights shuts off when fully charged.

Only had an opportunity to use it on a friend's truck so far. Not a monster truck but a big truck, big tires, three of them were quite low and it pumped all three of them up in practically no time at all and still had plenty of charge.

Know going into this inflator, it's going to be slow... good for the small space it takes up, but plan finding something to do for a bit, as depending on size and amount of air needed. I keep it in my UTV for an emergency

Woke up to a flat tire at a hotel on a business trip on a cold morning, hooked this thing up, and ten minutes later had over 30 psi, which was more than enough to get me to the nearest tire shop. Great for a single tire, but just know the battery isn't good enough for more than that, but that isn't the point of this thing. The point is to get you out of a pinch. Mission accomplished 👍

This worked great to inflate all 4 of the tires on my compact car but only 3 on my truck until I had to recharge it. Not bad for 7 tires on one charge. I did like the ability to change the pressure for each vehicle which was quite easy to do. I do wish that the hose was a bit longer, but the compact design made up for it.

Over headed quickly. With the cold front my daughter's tires needed air. Each one was at 26-27 psi. I could only inflate 3 to 35psi before the unit overheated and needed to cool down to do the fourth one. These were tires on a small Buick suv not a monster truck. It basically could only put in 24 psi total before it had to cool down. It's more than enough to top off a tire but don't expect it to add 35 psi to one tire in case of a flat.

I bought this for topping off and filling up bike tires before rides. It works really well and takes up minimal space in the vehicle. I haven't even thought of using it to fill up a car tire, even though it does have a setting for vehicle tires, I think it would do the job but it would take some time considering how long to fill a completely empty 29er bike tire. It is a little loud but only noticeable if it runs for a long time. I do like that I can preset a PSI setting for the bike and it seems to be pretty spot on.

This company does have some good products, but I don't believe that this is one of them. It will charge to halfway pretty fast, but after that it doesn't seem to want to charge very fast at all. Now, that would be less of a big deal IF it could inflate a whole tire without dying or overheating. Maybe I just got a bad one. I don't know.

Pretty useless unless all you want to do is top off your tires when they're not very low-pressured. It took about 3-4 minutes to get one tire from 27 to 32 psi. After doing the second tire, I had to stop and let the unit cool down because it was getting especially hot. It's not going to get you out of a jam, but if all you need is to tip off your tires every 1-2 weeks, it should suffice.

Very good tire pressure gauge