YESPER 12V/24V Jump Starter with 145W Quick Charge, 6000A 218Wh Portable Heavy Duty Truck SuperSafe Battery Jumper Box(Up to All Gas/Diesel), Powerful Car Jump Pack(-40°F to 140°F)

Great Little Box! I've owned this over 2 years now and it has worked great. It was in my truck almost year before needing it again and the charge was still there to jump start a car. Highly Recommend

Great product. Easy to use and very portable. I have "jump" started 5 stranded motorists including myself. It's like having roadside service in your trunk.

First of all, I've seen reviews on this product from people wanting this to be more of a power station or solar generator. That's not what this is, this has a totally different battery technology. This does not have a lithium iron phosphate battery, it has a lithium polymer battery, they are two different beasts. Lithium iron phosphate is designed to charge and discharge slowly with many more cycles of battery life. The problem is that lithium iron phosphate is actually a liquid battery, and it will freeze at -4 F. This jump staeter has a solid battery that is stable to -40 F, the main reason I bought it. Here in the mountains it does get that cold and your typical lithium battery jump starter won't work in the cold. The other advantage is that the lithium polymer battery is designed to charge fast and discharge fast, perfect for a jump starter. I'm blown away by this new battery technology! One of the other reasons I bought it is that a 44 year mechanic veteran who does instructional videos on YouTube says to never use jumper cables as it can burn out electronics on both vehicles, that totally blew me away. At first I was looking at the lithium iron phosphate jump starters, but they all stop working in the cold, totally useless for me. And if you read the reviews on those, many will die after just one year. I actually had one, and a year later when I needed it, it was totally dead and wouldn't even take a charge. This lithium polymer jump starter is guaranteed for at least 18 months, another reason to buy this one. The user manual says it should last for at least 5 years. If you are looking for the latest in battery technology and need a dedicated jump starter, this is the one to buy!

It's on the big side of jump boxes and it comes in a really cool storage box ( that's also excessive big) so it's not the best if your looking for something smaller. But it works great and it's got a boost button on the cables that makes a huge diffrence bought 2 at 35$ and would buy another at that price

This is my second jump starter from the company. My first one has been used many times during the past two years. This unit is a bit smaller and I wanted this one for my wife's vehicle. I have used it twice and it works great. I had to purchase a case because it doesn't come with one. My last one came with a case.

This unit is junk! A total misrepresentation on the web site!.

Great value! I have jumped cars, trucks and even diesel generators with no issue. It lasts a long time between charges as well. I have used this pack for nearly 3 years prior to writing this review and it's still going strong!

Had to use it today..so my car battery is weak. Hooked up YESPER FASTⅡ in a minute or 2 and Shazam car started immediately. So I have to say it is a good product, it also has the highest amps for that price range. Works great as back up phone charger and other stuff camping also.