Car Jump Starter,12V 8-in-1 Jump Starter Battery Pack 3000A, Up to 7.0L Gas & 5.5L Diesel Engines Quick Charge 3.0 Power Bank Jumper Cable with LED,Large Screen

works pretty good. starts my 4.5 litter gas motor(a Land cruiser) without any battery in it.. can start it a few times and keeps the charge for a reasonable amount of time for a trip and works reliably every time. regardless of the state of local battery. for the money, best deal!

This product came charged to 85%z I wanted to fully charge it before the first use and it only took about 10 mins to fully charge. I hooked it up to my car battery which had died from the cold weather, and it started right up. This is definitely a product that EVERYONE should have!! It can also be used as a flashlight or a portable charger for a your cell phone!!!! I definitely hit a win with this one here!!!!

Compact and strong. Worked great on my v8 truck. I was pleasantly surprised.

NOTE: I have not been able to use it for its intended purpose yet.This thing is a great little pack to keep in your car, and not just for an emergency. I have used it many times for a phone charger, and its nice to have the peace of mind having a car backup.The only issue is the battery life. On the first full charge i ever did, it leaked down to ~95% within 15 minutes. It stopped after that though.

Great! Immediately started my car! Must have!

Love it!So easy to use and started my husbands' truck. Works great!

It was delivered late but it works great

I hate giving this unit 1 star but figure most people only read the best or the worst and so this review would be lost in the middle if I gave it 3 stars.Here's the deal: it's a great unit with lots of features, love the digital readout & flashlight, USB ports, the price is right, etc. And I expect it will work great in most situations. But it didn't work for me, and here's why...A battery usually won't start a car if it's below 8 or 9 volts so when you turn the key it goes click-click and nothing more. But understand: the battery isn't completely dead - it's probably still holding 2 or more volts. So you attach the jump-starter, it senses the battery, and provides the amps ("CCA's") necessary to start your car.But in some instances -- such as (a) you have an older car that doesn't automatically turn itself off if you leave the headlights on, or (b) you have a hidden electrical malfunction that "tells" one of your onboard computers to stay on rather than going to sleep as they're designed to do -- the constant draw brings your battery down to 0 amps. At that point, the jump-starter won't acknowlege that it's properly connected to a battery and therefore won't provide the CCAs. In that sitaution, you need to override the safety features in order to force it to work anyway... and this unit does NOT have an override feature.SO -- if you want to start a "weak" battery, this is a great unit. But if you've got a "dead" battery, this unit will refuse to cooperate.