CYCPLUS Tire Inflator Portable Air Compressor, 150 PSI Cordless Air Pump with Digital LCD Screen Pressure Gauge, Electric Pump for Car, Motorcycle, Bicycle and Balls

No such a product exists.

Keep it with you when you are cycling and you will hope you get a flat, just so you get to use it.

Too late to return. Product defective and doesn’t work. Said my bike was at 100psi. I could tell it wasn’t. Tried it a few times. Even tried to crank it to 120psi. Finally went to a bike store and the said it was at 30psi. I did a lot of research before buying this product and just feel duped. Learn from me. Don’t buy this. Waste of money.

Been using my CYCPLUS A8 at a minimum on a weekly basis for the past 7 months. I used it to top off three to four bicycles, a couple of which are topped off daily. The A8 has performed flawlessly and outperforms many of the portable pumps on the market.Just recently, I began experiencing some issues with my A8, in which it suddenly requires a charge after topping off just a few bicycle tires. I emailed CYCPLUS about the issue. They were very responsiveness, made a couple of inquiries, then sent me a new A8 within a few days.The A8 is a superstar within the portable pump marketplace and CYCPLUS takes it one step further with their admirable customer support.

I use this for my fat bike. It's very helpful, and makes refilling my huge tires almost effortless. It packs easily in my backpack, and I carry it around regularly without even thinking about it.I have some valve issue, where I have to set the pump to 20psi, just to get 16-18. To cuts off early, and then the pressure drops down. Like I said, I think it's a valve issue on my bike, but it confused me that it wouldn't get an accurate reading.My biggest complaint, is that the hose has to screw onto the presta valve. It can't be simply pushed on, or clamped. Maybe this is a more durable design, but I'm not fond of the extra work to twist it.I wish the air inlet wasn't on the bottom. I try to figure out how to just set it down while it works, and I'm concerned about getting dirt inside of it. Also, I wish it had feet, or some kind of base meant to be laid on the ground. I hate the thought of it being all scratched up from the cement, and gravel. The travel bag is nice though.Overall, it's great, and I'm glad to have it, and know it's always ready to top up my tire pressure.Fat bikes best friend. 3psi to 20psi with no effort.

The inflation tube screws on. By the time I got it unscrewed I lost about 10% of the pressure rendering it pretty much unusable for filling bike tires.