Review on 🚴 CycPlus A5 Rechargeable Portable Air Compressor Tire Inflator Electric Pump 12V DC with Digital Gauge LCD Display Emergency LED Light Handheld 150PSI High Pressure for Car Bike and Other Inflatables by Patrick Ross

I purchased this Revain CYCPLUS A5 Battery Operated Air Pump on 7th June 2109 primarily for our 2 bikes. Like some other reviews it worked, but I also found a (same) flaw in that my pump consistently showed a higher pressure than the pressure I had previously set it to. I wanted 80 psi and every time it read 90 to 92 psi. I checked the pressure several times on different bike tires, all with Schrader valve stems, using 3 different pressure gauges (2 mechanical and 1 digital). At least it was a constant positive pressure. So I set it to 70 and then 72psi, pumped up the tire and checked the pressure, then deflated and reduced the pressure to 72psi. It was never less than 82 nor more than 84 psi. I wasn't too concerned about the tire pressures because I didn't exceed the desired 80psi by much. I just wanted to make sure the positive pressure was always constant, which it was. Knowing this and compensating for the preset PSI value essentially fixed the inaccuracy of the pump's LCD display by always presetting a lower PSI value. Also, I didn't track how long each tire took to inflate, but each tire took a few minutes to inflate. That's why I gave 4 and not 5 stars. I made a few more points that might be of interest to others. The "air tube" gets pretty hot when you're trying to inflate a flat tire, so watch your fingers when holding it. You can burn yourself, but I'm pretty sure that applies to any brand of portable air compressor you use or buy. If the hose was longer it might be a little less hot but that would make the whole pump longer as it can be stored in the pump itself. The BLUE LCD is small. It can be difficult to see, especially when in direct sunlight. I used it in the shade so glare from the sun wasn't a problem, but it would be nice if it was a bit bigger. Also, it would be better if it was at the end and not in the middle of the cylindrical pump body. That's why. When you screw the air hose into one end of the pump and tighten, the tire valve on the other end "sticks" either way. You cannot rotate or reorient it to face the tire valve without loosening it. If the LCD is facing down you will not be able to rotate the pump or hose to see it as the air hose and pump body are one piece. If you try to twist it in a direction that loosens the air hose's connection to the pump, it will leak, which will never happen. Therefore, when the pump turns off, you may have to bend the hose to see the LCD display, which can be a bit uncomfortable and even difficult. Even if the pump turns off when the display is not facing you, you will not be able to tell if the pump has reached the set air pressure or if the pump has shut down due to a low battery. If the display was on end you wouldn't have this problem. So I think it will be much easier to see. That doesn't mean it's bad design though, as these pumps only seem to come with a display in the middle or at the end. I chose this pump, model A5, after reading all the descriptions and reviews of similar pumps on Revain, and it seemed to me that this pump has the best combination of physical dimensions, weight and technical characteristics. I haven't tried the phone charger. The alarm/work LED was bright and was at the end where the air hose connected, so it was shining toward the valve stem on the tire. I think that if used while pumping, the current drawn from the battery will shorten the pump's run time somewhat. Once the air hose is connected, it is advisable to turn off the Emergency/Run LED. The cost of all these pumps (at Revain) is about plus or minus $10. The battery eventually died in the middle of inflating the 4th tire. At this point, I plugged the 12V DC power cord into the outlet in the car and into the round DC input jack on the end of the pump. The pump then functioned normally and finished inflating the tire as expected. Everything was good. Only time will tell how well it will work in the future. Based on the above I think this would be a good purchase decision. So far I'm quite satisfied.