CYCPLUS Electric Air Compressor Portable Bicycle Pump Car Tire Inflator, Max 150 PSI, Auto Shut-Off Air Pump with Presta and Schrader Valves for All Bicycles Motorcycles and Cars(White)

I've already used this regularly to keep my car tire pressure set to the correct level. I can just set it and leave it. My old car tire pump that plugs into the cigarette lighter socket needs to be monitored and it's also quite noisy. The Cyclplus compressor can just be set to a pressure and it will automatically shut off, so I can do something else and come back to it when it's done.I've used it for my commuter e-bike as well. It save a lot of time over the lightweight handheld pump I had been using. I don't need to use a separate tire pressure monitor to verify the pressure. I just set it and go. I still have the hand pump as backup, since it's quite lightweight, but I haven't had to use it in a long while.

I waited a couple months before saying something so people could be confident in my take. So, if you're looking at this one, especially if it's on sale, stop looking and put it in the cart. It works amazingly well, the battery life is somewhat unbelievable, and the design itself deserves kudos. When you get to using it you'll instantly know why it's the shape that it is. It drives me crazy that we have to be impressed these days simply because somebody thought about the design of a product, but that's the world we're in and somebody did indeed think about it. Hassle free with super long battery life, works flawlessly with presta valves, hits 100 psi without a cough, and the design makes using it a breeze.

After reading the reviews I took a chance on this product as some people seemed to like it and others said it didn't work.I think a lot of the confusion around how to use this product could have been helped by including better instructions with it. So here's what you need to know ---The product does work, it's an easy to use pump, and I've had no trouble putting as much as 90psi in a road bike. I'm sure it works to its stated specs. However, I had to figure out on my own that it will power down and not power back up if you put it on a tire that is close to the pressure you have it set for. So for example, if I have 85 psi already in my tire and it's set for 90psi, it will probably turn on for half a second and then fail. When this happens, you have to plug it back in to its charging cable. It should turn back on when you press the power button.To avoid this, I don't use the auto shut off. I keep it set to something much higher than I want, then I stop it manally when it reaches my desired psi.The other thing I found confusing is that when you set the psi, the screen will blink 3 times and then go back to zero. This is normal so that when you attach the valve to the tire it will display the current reading. It would have been nice if that was noted somewhere in the instructions because initially I thought it wasn't holding the setting.So that's the missing manual for this pump. I haven't used it a lot, but so far it does what I need it to do.

I use this on gravel rides to increase the tire pressure on paved roads and decrease it for gravel. This practice makes for higher efficiency on pavement and much better vibration absorption on gravel. It works wonderfully. It is probably heavier than some people would want to carry, but it makes up for it in battery power. Some competing products are smaller, but only good for three inflations. I don't know how many inflations I would get out of this one, but I've never come close to running it down. I don't even charge it between every ride. Maybe every 3 or 4 rides. The pressure gauge allows you to set the pressure you want and it will run until it reaches that level. I wish it had a bleeder valve so I could connect it to the tire, and decrease the pressure in the tire while watching the pressure change. As it is, I have to deflate the tire to where I think it's lower than I need, then connect the pump and inflate it to the desired pressure. Still, this is a great unit and I have no regrets about buying it.

I had to update this review since the product has changed. First - this really is a nice pump but the problem for anyone with presta valves is that the "presta adaptor" sucks. I returned it and requested a replacement and the replacement unit had that same set up. I bought the screw on presta adapter and that worked. I'd suggest getting those along with the pump. This is still a great pump but the way the first generation was designed was little easier to use.Added 7/6. AFter using it for a month, I have to lower my rating. The first generation had fill valve that was 90 degrees, so you could easily set and fill a tire quickly with zero problem. I guess the designers thought that looked too "clunky" so than change it to where the pump screws on to the tire and the hose has to remain straight....and there isn't enough room for it to be straignt. So while "topping off" my tires before a ride I successfully DEFLATED my tire and I had to resort to my hand pump, which oddly enough connects to the valve stem with a perpendicular attachment. So spent forty bucks for a pump that does a better job deflating than inflating tires.

Easy to operate and automatically shuts off when the appropriate psi has been reached.