YESPER Monster N1 Multipurpose Heavy Truck Jump Starter

This is a great must-have tool for off-roaders and adventurers. I charged it as instructed upon arrival, and within the first two weeks and with only one charge, I was able to jump-start two vehicles, inflate three pool inflatables, and top off the air pressure in four tires (only about three pounds each).

The tire inflation device is subpar. I've tried using it several times, but it won't inflate a tire past 10 psi. However, it works well with smaller inflatable items. The light is not very bright, but it's useful in a pinch. As a jumpstarter, it works well - I've used it twice in 2 years, and it hasn't let me down.

This totally saved me from being stuck in the rain. It's so simple to use - just hook up the color-coded cables to the battery, turn it on, and start your car. Bing, bang, boom, you're done! It's nice and small, so it's easily carried and held for usage.

I mainly use this to inflate motorcycle tires at the track. It works great, but it's slow for car tires. That said, it does work for emergencies, which is its intended purpose. I also used the jump-start feature, and it worked easily on a 4-cylinder small truck engine.

It's a pretty great package for the price, with good raw functionality, but it lacks in other qualities. The battery life is not amazing, the LED indicator for the jump switch doesn't work, and the battery life display is pretty inaccurate. But I still like the fact that it does successfully jump-start my car.