CYCPLUS Tiny Bike Pump with Gauge, Max 120 PSI Electric Bicycle Pump, Auto Stop, with Presta and Schrader Valve for E-Bike, Mountain Bike, City Bike and Road Bike AS2 PRO(2025 Updated Version)

Great little pump, slightly confusing valve
This unit is extremely small, and not too difficult to pack away. I found the pressure setting to be ‘accurate enough’ for getting your tires inflated and back on your way, but can be a little off at higher PSIs.On one charge, I found I was able to get the two tire fills mentioned below, which isn’t far off from what is listed in the chart. I tried a third, and it gave up about half way. USB-C charging is implemented properly with the correct pulldown resistors, and it will even charge with an e-marked (100W or 240W) cable. Some products mess this up, so bravo!It took about two and a half minutes to fill a 700x23c tire from essentially empty all the way up to 120PSI. I measured with my floor pump (which is known to be quite accurate) and found the tire was only up to 105psi. It was far more accurate when filling a 26×2.1″ tire from empty to 45psi, landing right on the money and taking just two minutes. It’s pretty loud and annoying when filling, but not much worse than any other electric pump.The unit is set up for Presta valves out of the box, and just simply presses onto the valve stem. You can change it to Schrader, but personally, I’d just use the included screw-on hose instead. I appreciate how the threads can turn independent of the hose, so you’re not spinning the whole pump. Holding the pump in the right spot to press the valve core isn’t nearly as easy as with Presta. Inversely, if you want to fill a Presta tire with the hose you need an adapter. It’s better than the usual cheap ones, but it’s easier just to hold the pump directly to the stem. I usually carry it set up for Presta, with the hose packed along for Shrader valves.Accessories included are a nicely fitting silicone case, an extra rubber grommet and O-ring, a needle ball inflator, a waterproof bag, and a USB-C to USB-C cable. The waterproof bag feels cheap, but does the business.This is quite expensive for a portable air pump, but I can tell there’s a lot of thought put in. It does what it claims pretty well, and definitely beats a frame pump when you’re already exhausted from riding and fighting a new tube into the wheel. Proper USB-C charging is awesome! The only real complaint I have is wanting better accuracy at high pressures, but that’s also at the very limit of what this pump can do. Everything else is pretty minor. If you don’t mind dropping the cash, it’s a very nice addition to your kit.

Great for emergency repairs.
Like most riders, I’ve had tire punctures a few times on long rides. The option in those situations is to learn to change an inner tube or take a long walk back home pushing your bike. Changing the inner tube isn’t really difficult but inflating the tire to 100 PSI with a hand pump takes time and a lot of effort. This little battery operated pump works great. I have two bikes (a trail bike with Shrader valves and a road bike with Presta valves) and I happened to get a similar, but different brand of pump recently. While both pumps can be converted between the two types of valves, I like having the two pumps so I can just keep one with each bike set up for the specific valve and not need to switch.To be honest, this CYCPLUS pump is a little smaller but also seems to be able to inflate more tires on a single charge. I was able to inflate both tires (700X25) from almost completely flat to 100 PSI. While it’s really rare that I have two punctures on the same ride, it has happened and it’s nice that I won’t have to hand pump the second tire.

After having been disappointed by a few other small-size-high-power pumps, mostly because they failed to fill more than a tire on a single charge (and even that not consistently), I read (on Amazon) the positive reviews for this little one and decided to try my luck one last time.And I’m happy that I did: it’s even smaller and lighter than its counterparts, has a very clear & sharp OLED display, and — most importantly — I had no trouble to fill a couple of almost empty bike tires up to 45 PSI each, and the battery had still plenty of juice for more.The pump did its job fast and auto-stopped when the right preset pressure was reached.Obviously, it is delivered with all relevant accessories to enable filling not only bike tires; a nice textile bag (to keep everything tidy together) is included as well.Besides the fact that it gets quite hot when in use (common issue with ALL pumps I am aware of, cordless or otherwise), there is really nothing I can complain of – praises are due!

This is ridiculously small. It’s around half the size of a packet of 20 cigarettes. It feels solid enough but I just can’t imagine how it produces so much air from such a small device. It’s encapsulated in a silicone cover, which is recommended to keep on (instruction booklet). This is because the pump can get very hot. Other pumps I’ve tried did not warn about the high temps that can be reached but I appreciate that this one does warn you, even resin valves on TPU inner tubes can melt if the extension hose is not used.This is by no means a pump I’d use for regular inflation, but it’s a game changer for a pleasure cyclist like me, who wants to travel light and hopefully won’t get a puncture.It came fully charged, in use it’s quite loud for such a small machine. It does get hot, but that’s just energy transfer and can be expected. At least the manufacturer tells you to expect it, which I admire.