Fanttik X9 Ace Mini Bike Tire Pump, 32s Fast Inflate Bike Pump with Gauge, 150PSI Electric Air Pump with Presta and Schrader Valve, Suitable for Road Bike, Mountain Bike, E-Bike

This is pump looked fully charged when it arrived. So I decided to check it on a few bicycles. It topped up two 700X35C Shrader tires with about 10psi each and a 26"X1.75 presta tire with about 15psi and still the battery indicator was white. I then filled two 700X25C tires from flat to 85psi. It filled both tires but the battery was drained. I was impressed. It worked well with both Shrader and Presta valves and the pump was much quieter than my previous pump. A little larger than most mini pumps, but still small enough to be packable for a long ride.

I use this to top off my MTB tires before a ride. So far I've been fortunate enough not to need the pump during a ride, but when I use it prior to riding or at home when maintaining my bike it performs very well. I did let a 26x27.5 tire go flat at home and it took the pump a little over a minute to bring it to 23 psi for my next ride.

The first time I reviewed this product I gave it one star and wrote this: "I bought this to pump up my road bike presta valve tires. I push the button and hear it working but no air goes into the tire. This product is garbage. Don’t buy it."To Fanttik's credit, they saw my review and quickly sent me a new unit. I'm slightly embarrassed to admit that the problem was user error. However, in my defense, the instruction manual included with the unit is NOT written clearly at all. Fanttik should revise this to CLEARLY communicate that the air hose needs to be screwed onto the tire valve stem that you're trying to inflate. This was not clearly spelled out in the instruction manual and was counterintuitive from my perspective because I've been pumping up bike tires for 45 years and never in my life had a bike pump that required me to screw it onto the valve stem. Anyway, do that and it works just fine.If their instruction manual had been written clearly and I didn't have to go through this hassle, annoyance, and minor embarrassment, I'd have given this unit a score of 5 stars. They lost 1 star on this review because of that. But if I could give 1/2 stars, I'd really want to score this rating 4.5 because they earned back another 1/2 star for their outstanding customer service.

EXCELLENT! It is not as small as the others on the market, but it is quieter, the battery last longer allowing you to inflate multiple flat tires on a long distance ride. I have a planned 9,500 mile ride with my 12 yr old son this yr around the USA. Flats are expected, and a hand pump is just not desired.It is a little heavier than the others as well, but I suspect that is also due to battery size and capability. I'll take it! Its an insurance policy on the cross country bike tour.I mentioned the size at the beginning as it being bigger then the others on the market. I need to point out that while this is the biggest I am aware of these little compressors, it is still small enough to fit a top tube pack. It is a bit heavy, so i would not want it in my pocket all day, but it certainly will fit, just not as comfortably as some others.At the end of the day, I chose this compressor because of PRICE. It does everything I need it to do. I am not a competitive rider, so I dont need to inflate in 30 seconds and often enjoy the extra break time to catch my breath to fix things if needed, so if it takes me 30-90 seconds longer to repair a flat, I am not concerned, you might be!Overall, I am really happy with this product. it is a well made product.USB-C charge port with a slow flash LED charge indicator and steady LED when fully charged.Digital display/ Programmable up to 150 PSIAuto-shutoff once at proper PSI.Shrader and Presta valve capable/ready

I bought this for my road and ebike, but had to use it on a car tyre recently and it did a great job. Easy conversion between presta and Schrader, which is a huge + for me. Heavy, but that's probably because it has a good battery. Will easily fit into a saddle bag

Amazed at what this little pump can do. Fills my 26x4' fat bike tires quickly. Low noise, accurate readout, auto shut off. All at a very reasonable price.

I'm only a few days in, but this works incredibly well. I did not initially read the instructions, so I will stress that you must screw the head onto your valve to get a good enough seal. This is not like a floor pump where you can just press it on. Overall, the battery is holding very well and gives you a number of inflations. It is a little heavy and loud, but for the price, it's nice to have the peace of mind and not have to spend 10 minutes cramping your forearms with a mini-pump when you get a flat out on the road. The speed doesn't appear to be too bad, as I've been getting about 1psi every1-2 seconds for a 700x39c tire. I know it's a little bigger than some of the other inflators out there, but I think the increased battery capacity is worth it, and I don't think it's unreasonable to ride with this in a jersey pocket.

I'm a cyclist and I love the way this little pump will show psi. If you're using the Presta side (just unscrew and flip the head), no problem. But I have some uses where I need the Schrader side....not so easy to thread onto a Schrader valve. Maybe it's just me. That is the ONLY reason why I gave it 4 starts. I won't ride without it. But keep it charged up. Nice design and reliable.