dwndpump Mini Bike Pump, Electric Bike Tire Pump Max 100 PSI, Portable Bike Air Pump with Presta and Schrader Valve, for Road Bikes (No Pressure Gauge)

I am using this to replace CO2 cartridges when I get a flat (out on a ride) with my MTB or road bike. It works well to inflate a 29 x 2.6 tire up to 20 psi, which is fine. But on my road bike (700 x 25), I’ve only gotten it up to 50 psi. That’s barely enough to get me home. Also… if you use TPU inner tubes instead of traditional rubber tubes, this little pump can melt the plastic valve, because it gets pretty hot when pumping up the tire. The solution is that you need to buy a separate attachment hose they sell for around $9.00 on Amazon. It will get the hose hot, but not the plastic valve on your inner tube. UPDATE: The small attachment hose is definitely worth getting (need to buy separately). It creates a much better seal when the tube is screwed into the inner tube valve. I am now able to get my road bike tire up to 90 psi, which is plenty. Also, the unit doesn’t seem to get as hot when using the attachment hose.

This works just as advertised. I have used it twice on group rides and it inflated the gravel tires with no issues. It does get a little hot so take breaks when using. Battery needs to be charged after a complete use but it is so much easier than a mini pump. Small enough to fit in saddle bag or Jersey pocket. Great value.

Seems to hold a charge, the problem was getting it to fit on the Presta valve and holding it on there until it really starts to kick in. It starts going but doesn't do much until it gets really noisy (i.e, a higher whine). Then it seemed to work OK, although the tire never seems to get full, as in 100 PSI full for a racing bike. Only used it twice in the garage. If it saves me when I get a flat out on the road, maybe I'll give it 5 stars. Until then, not bad, not perfect.

WOW! I'm surprised, this little pump is really good. It pumped up a 29x2.1 tubeless tire from zero to 22 psi in 30 seconds. It's tiny and only weighs 94 grams. And for $34! I'll never ride without one.

Ok, this little pump is tiny but packs a punch! 😄💨 It’s super powerful (and yes, pretty loud 🔊), but it works great and gets the job done fast. Perfect for keeping in your bag or bike kit for quick fixes on the go. Totally recommend! 🚲✨

I used this thing maybe 4 times before the battery just gave me an error when I tried to charge it. Worked well until it didn’t. Waste of money.

Well, initial use out of the box was to add 15psi to the air bags in a truck. From 5 to 15 psi in 20-30 seconds for each bag. Next, flipped the Schrader valve rubber grommet over to Presta in 30 seconds but requiring screwing the head. The tip bits are small and easy enough to swap out but the bits are small and grabbing the grommet from the housing was difficult. Needle nose pliers, forceps, or a dental hook works but I didn’t see an easy way to extract the rubber bit easily without additional tools. Let it be known that I have sausage fingers. Really cool rechargeable air pump. Know the output from this per charge to be sure it meets your needs. I found this to be capable little pump.

It does not have a display to show the pressure.

Infla bien. Muy comoda

Working great good pressure can inflate 2 flat tires

Se ha convertido en un imprescindible para ir en bicicleta. Muy potente, y un tamaño pequeño que permite transportarlo sin problemas. Tiene mucha fuerza para lo poco que pesa

Pratique et facile d'utilisation, manque peut être un affichage digital pour donner la pression mais pour un dépannage simple c'est parfait

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