Bike Electric Air Pump: 150Psi Portable Bicycle Tire Pump with Digital Pressure Gauge for Road Bike, Mountain Bike, E-Bike, Motorcycle with Presta, Schrader, Dunlop Valve Accessories

I had no trouble understanding the directions and using the pump. It's nice to see the starting pressure when you attach the hose to a valve, and that confirms it's attached fully. I used it to top off four bike tires. For one of them, I did not get the initial pressure. There is a part you turn to switch between Schrader and Presta valves which I had inadvertently loosened. That caused the hose to not fully engage the Schrader valve. Once I tightened that part, it worked perfectly.The pump should be easy to pack into a repair kit to carry on our longer rides.

We have two bicycles with different air valves. I bought two different hand pumps for them. Difficult to pump at home in the garage and too large to carry on bike rides. My new battery operated air pump is easy to use on both air valves with the adapters included with the rechargeable air pump. It fits in my bike saddle so I am able to take it on our rides. Great tool at a great price. Fast shipping from Amazon. Makes my life less complicated

Solid electric pump that has saved me more than once (I’m prone to tire mishaps). It fits well in my triangle bag and the built in presets/schrader adapter is very useful. My only complaint is a minor one about battery life. I inflate my tires to around 100 psi, and topping off both tires seems to tax the battery. If I usually get about two tires out of a single charge. Don’t get me wrong that is obviously perfect, but this thing lives in my triangle bag so I often forget to charge it if I had a mishap that day. That means the next time I use it the battery will be dead, and I could be stranded in the side of the road with not only a deflated tire but a deflated self. Obviously this is all up the user, but I feel like a bit more battery life would make this thing perfect.

This is nice and compact, comes with a nice bag to keep everything together, and works well.

Junk. Does not always work correctly. Set it to 50lbs tire pressure on a tire that only had 5 lb in it and it reads that the tire is at 50lbs and shuts off. Wish I knew it had this issue but by the time a had to rely on it 30 days had gone by and tuff luck. A real POS.

This is a great portable tire inflator. It is small and compact to take with me on my bike or can even be carried in the car. It is easy to use and has a lot of convenient settings. Very useful.

Actually works very well and is super convenient.

It did take a long time to get the item but I did get it. Once I contacted the seller they did respond. It was the best price and works great so even though it was slow shipping I am very happy and would buy again.Now the only thing that I did not like about it was the weight this thing weighs. It is incredibly heavy, and when you are chasing weight loss on your bike this does definitely not applies. Otherwise great product.