Portable Air Compressor - Vastar Mini Air Pump Tyre Inflator 100PSI / 2000mAh Rechargeable Lithium Battery with Digital LCD LED Light, Air Pressure Detection and Automatic for Car Bicycle Ball Tires

A total waste of money. The device is very loud, takes way too long to inflate a tire even a few psi, it overheats easily, and it takes long to charge. I have two other portable devices, and those are much better. I bought this one thinking the small size would make it convenient to keep in my car, but after seeing how useless this device was, I realized I made a mistake buying it. Anyone that gave this device good reviews obviously haven’t tried other portable air compressor devices, most which work much better then this. Don’t waste your money.

So I only used this on one bike tire to try it out. It is loud. I have the piezo adaptors on my tires. You need to use an adaptor which is a hassle. I wish this had a native connector instead of an included adaptor.It did inflate the tire quickly to the set tire pressure.Just as a note the connector at the pump does get hot, which they warn you about, so be careful.

It only worked one time. For emergency purposes only. Went to use it a second time and it made a noise that would wake the dead. Scared the fire out me. Below is a picture of the one and only time it worked.

I got a bike recently, and had trouble inflating the tires with a standard truck-tire inflation chuck. Is it any wonder? Those things are turned up to around 150psi! This, however, worked perfectly. You can set it to any specific setting via the 'custom' setting, then just relax while its airing up the tires. For my bike, this was 43psi, and since it has relatively small tires, this device took care of it in under a minute per tire.I'm very happy to keep this with my bike kit. Its definitely much easier to use, especially out and about, than normal bike pumps.

The first one I received was not working properly, Amazon was terrific, they sent a replacement immediately. I have used it several times and it works very well, it is slow for a car tire but there is a good chance you’ll have it with you in your vehicle since it is so compact. I am concerned about the warranty. The qr code sends you to a website that says page invalid, Manually inputting the supposed website for warranty also gives the same results. If it lasts I am well satisfied but it appears that the company backing a warranty is unreachable.

These do actually work. However, I the connector tube is pretty short, so it can get kinked and stop the airflow entirely.. they need a more rigid connector.. or they need a longer connector.Otherwise, this works rather well for a few months now.

I bought this to keep my bike pressure within the ideal margins. I've used it no more than 20 times. While it worked, it was rather noisy (and also slow to inflate the tires, by I thought that was on purpose not to easily blow away the tires), but it did its job.Yesterday, while inflating one of the tires, the device made a sudden jerk and then started to emit a super-acute sound (something is wrong), veeeeery noisy, and doesn't pump air anymore. Gone. I guess I'll have to deal with the warranty, but the thing simply broke down.

Good product at a good price. I have used it to fill air in my minivan and it works well although it does take time to fill a car tire ( approx 10 mins for 10 PSI ).