NOCOBoost GB20: 500A UltraSafe Jump Starter – 12V Lithium Battery Booster Pack, Portable Jump Box, Power Bank & Jumper Cables - for 4.0L Gas Engines

I originally bought this to carry on my ATV, after witnessing a fellow rider suffer a dead battery that resulted in having to tow his ATV out of the woods. Since the purchase, I've used it on several vehicles (my own and others), and it simply works great. Easy to hook up, easy to use, and stores well, holding a fully charge for months at a time, even in cold weather.

This thing is a lifesaver!! We love it! It works perfectly and it's strong and hold a very long charge. This battery booster hasn't let us down at all and we have had to use it with semi trucks and SUV's and it worked like a champ! We are very pleased. It was worth every penny!

Bought for a Christmas gift. Very compact, easy to use, light weight. Very good and handy to have in your vehicle

I bought this to start my 750cc motorcycle after it sat in the garage all winter. It is easy to use and it works well. It was a little tricky to get the cables to clamp onto the very small battery terminals but, after a couple of tries, the bike fired right up. I have a feeling I will be using this to start my riding lawn mower in a couple weeks.

I've jump-started my car maybe 6 - 8 times on a single charge with this battery pack, which I leave in my car full-time, all year long.I have a little-used car and the internal battery runs down so far nothing works at all. I need to use the "override" feature nearly every time (which is not well-documented, I have to keep going back to their web site to remind myself how it works) but once the pack is geared up and ready to go, my car alarm starts wailing and I can start it on the first try. No chugging or waiting for anything to "get more power" or whatever.I was initially worried about which exact model to purchase (NOCO makes a variety of battery packs for different loads; I had borrowed a friend's much more powerful GB150 which is 3000A versus this 500A pack), but this one works perfectly fine for my manual 4-cylinder car. We'll see if the "20 jump-starts per charge" is real, but even getting half that would be impressive.The connector wires couldn't be simpler: there is only one way to connect to the battery pack, you match red-to-red and black-to-black on the battery and go for it. The jaws are not as substantial as a regular set of jumper cables, but they seem both sturdy and appropriately "springy". I don't anticipate having to replace them any time soon. Fortunately, NOCO actually sells replacement wires, though they are fairly expensive relative to the cost of the kit (~$80 for the kit, ~$35 for replacement wires).I'd love to have more instructions printed on the device itself, especially for the "override" which unfortunately for me I have to use often.

So, this little box does an excellent job so far of jump starting the car (Honda CRV). I'm have battery issues, so using it frequently. However, it does not hold a charge for very long, so make sure you bring it with you and charge it often. I have not and do not plan to leave it in the car, so not going to ditch jumper cables in case I forget to bring it and need a jump.

This product is an absolute must have. It takes up almost no storage space, and it is extremely versatile. I would highly recommend this product for people who do roadside assistance, or for people who live in cold climates. The cables are a great length, and it charges up and jumps almost immediately. Absolutely worth it.

Bought this on a whim since the price was good, I have an older that if you leave a light on you'll drain the battery. I've had to have AAA come 2 times since owning my car in 7 years, I figured if I do it again I can jump it myself. Thinking I'll never use it, I've now used it 3 times since buying it. Weather has gotten very cold and the battery is old now so this has been a life saver each time, worth the money and works well. Also the ability to use it as a power bank is a big plus. The hook up is idiot proof and safer to use then hooking up jumper cables, the chance of damaging two or one car has pretty much been eliminated.