Car Jump Starter, 4000A Peak 21800mAh 12V Car Battery Starter(Up to 8.0L Gas or 6.5L Diesel Engine), with USB Quick Charge 3.0,LED Light,12V DC Output.

A friend recommended this brand to me, he has a larger model, but I didn't need that.I used this for the first time to start a 2009 Kia Rio after the battery had gone completely dead after -27° F temps. The car battery had nothing. I connected this to the terminals & it was so dead that it didn't even register as being connected. I turned on the override and the car started right up, no problem at all.I disconnected it & the car shut off immediately. Reconnected it, started, and let it run for a few minutes & then the car was able to run on it's own.All in all, I had to start that car 3 times with this & leave it connected to the batter for several minutes. The charge on the Nocco only went down to half in that time. So you could reasonably jumpstart 5+ cars with this (probably more, but I'm being conservative).Time will tell if it holds up & how long it stays good for, I imagine if you use it as often as I'll use mine (1-3 times a year) it'll probably last a long time.Takes a long time to charge (it's a large capacity battery, so no surprise there), but what's interesting is that the USB cable it comes with is not capable of Fast Charging, which I thought was interesting. I tried to use the USB-C cable to fast charge my phone and it would only charge normally.This is a great product & a great investment, especially if you don't easilly have access to another vehicle for jumpstarts, or don't feel like having to rely on others for help, or if you just don't feel like having to mess around getting 2nd vehicle in position to jump.I highly recommend this.

Great product and price!

Highly recommended. I have helped so many motorists with it. Holds the charge for weeks. Even stated a commercial truck with it.

This jumpstarter does not hold a charge, so it’s absolutely worthless in the case of an emergency.I’ve had this for two months now. I charged it and jumpstarted my jeep when I received it, I then left it in my jeep in case I needed it. Two months later I needed it, and it’s absolutely dead. That’s worthless.

Works great and love not having to carry full size jumper cables. Bought them for my kids so they are prepared

At first I was very skeptic about purchasing this product, I did my research and liked that it does lot of other things in addition to jump start. wireless charging is great. In the end I'm super pleased that I made this purchase. Works great! Easy to use! I saw videos online that helped be understand how to use it. My Volvo hadn't been driven in a while and it had a dead battery, this guy powered it up right away. very portable. A friend has a different type and his does not hold the charger for more then a few days. I took this to the camping and used it twice in a week with only one charge. This device is cheap insurance against those failures and I'd recommend one for every car. It's small enough to fit in the average console or glove compartment. This is a must have for someone with a car they don't drive much. Easy to use, light weight. Highly recommended!

At first I was a bit skeptical whether or not this particular jump starter was gonna be the right purchase, mainly cause I’ve never heard of the brand/company before. But boy was I wrong. This is not the first jump-starter that I’ve ever owned but in fact is the 3rd one. I tried testing this new one on my 6.0 liter work truck to get an idea how well it worked. In the past I when I tried using the other two jumper boxes on this same truck, it gave me some trouble as they would struggle when attempting to jumpstart my truck. However pleasantly to my surprise this one has no hesitation at all and turned the engine over immediately. I was also surprised to find out that this one has the ability to wirelessly charge my iPhone and also included attachment to provide a 12v power outlet like the ones found in a car. As long as this thing lasts the test of time, it gets my vote of approval.

Perfect. Recommend one for each vehicle