MOSTOOL M6 4000A Portable Jump Starter with AC Adapter Startup to All Gas and 10 0L Diesel Engines

I LOVE this unit. It's basically a LARGE power bank that has enough juice to jump your car battery. The unit is nicely designed and it has a number of cool features. First off, when you power it on, it tells you the percentage that it is charged. It's recommended that it be at least 50% charged if you are going to jump your battery. It has an out put on one end that you plug the jumper cables into. On the other end, it has a rubber flap that when opened, reveals a number of inputs & outputs. This is where you charge the power bank (with an included AC adapter and USB cord). You will notice though that it has both USB-A and USB-C inputs. This allows you to charge your devices and it will charge them faster than a typical power bank. This unit also has an LED light on one end. It's pretty bright. Definitely will come in handy in an emergency situation at night. Could be used to peak under the hood to find the battery posts or if you're changing a tire and need a light, this will do the trick. The LED light can be solid, or set to SOS or even strobe. Cycle through the options with the push of a button or turn off/on by long-pressing the button. This item comes with a small manual. It's well written and it is not just a page or cheap insert. It's a legitimate, small manual that fits inside the case and it provides clear instructions on how to use the item for jumping a car battery. As mentioned, this item comes with a nice zippered case. It's not exactly soft sheel (like a pouch) but it's not hard plastic either. It's more hard than soft. It will do a nice job of storing the power bank and accessories as well as protecting all the relevant components. Overall, I love this unit because it is practical, well designed with a number of convenient and useful functions. And it will store easy in the trunk or the back of the SUV. Read more

Now this is a heavy duty jump starter. Very easy to use. I jump started my friends cargo van that has an extremely large battery and it started up in seconds. The jump starter came fully charged and after one jump start and 3 weeks of charging multiple phones an iPad and a couple of Samsung tablets daily it finally died. It took 2 hours to fully charge the jump starter. Comes with 2 regular USB ports and a USB C port which can all be used to charge other things. The C port is also used to charge the jump starter. The LCD screen makes easy to know when it's ready to use. Love it a must have. Read more

Absolute must to have. Stores easily in your car. Rechargeable. I have used it so many times . I have left my lights on, couldn’t start car after having it sit for two weeks at the airport while on vacation, kids left a light on in the inside. Easy to recharge, small compact. Don’t have to keeps cumbersome jumper cables in the car. Easy for teenagers to use. Read more

I have several of these. This is the latest I got. I have tried it with multiple vehicles. This works great for my tractor, UTV, and my wifes car, and my larger V8 Classic Bronco. We are talking about 900 CC engine, 3.0 liter gas engine, and a 400CI V8. This jumper works great on the small engines, works OK for the V8, bit of a slow spin though. I imagine it depends on how dead your car battery actually is. One thing this jumper would not do though, it would not spin the starter on my 7.3 liter Diesel fast enough to get a start. I would recommend something more powerful for an engine that large. It is handy, charges back up pretty quickly , inside a couple hours, and you can charge it in the car. It's also small, comes with a storage case, and fits nicely in the car, out of the way. Price is also pretty friendly. Read more

This works great as a giant charging brick. Easily provides power to our 5volt (up to 3amp) devices and charges my kids phones on long trips. I almost had the opportunity to use it as a jump starter but, by the time I got there to assist, someone already helped the person. Oh, well. Still looking for that opportunity. The case it comes in is compact, organized, and sturdy. The clamps are nothing to sniff at either. The springs are strong and the cables themselves are a heavier gauge than I expected. Overall, based on my impressions of the quality of parts used, the system looks like it is capable of jump starting a standard sized engine. Read more

This has been in my car for several months at mostly subfreezing temperatures. It has only lost 5% of it's total charge during that time. Seems quite good, easy to follow instructions. So far I have not had to jump my car, but I have used it for USB charging on occasion which it managed fine. Read more

Perfect. I ordered it to keep in my vehicle for emergencies and I already got to use it. A friend needed a jump after church and it worked great! Vert compact and easy to store. It was easy to use and I was thoroughly impressed. Read more