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

Excelente cómpralo

I'm forever leaving my key on when I get off the motorcycle. Also it holds a charge for quite some time.

I waited to give my review of this battery jumper until I had used It for a while. I LOVE IT!!! I charged it up upon arrival as stated in the instructions. I have jumped a V-6 engine with it 3 different times over the past 6months. I still have 80 percent charge on It. It has sat for months and not lost its charge as some reviews stated. I am very pleased and would highly recomend this jumper.

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I has used this on multiple vehicles and it works like a charm. The only battery I was unable to jump was one that was beyond dead and needed to be replaced. Easy to use, fast charging, multifunctional, one of the greatest buys on Amazon. Had to buy another for my other vehicle

This product has done everything it claimed to do. The only thing we have not tried was using the light level in the dark. but I think it would work as well. We have yet to see the longevity. It would have been nice to include a carrying case. It is a nice size and surprisingly small for the power it puts out. It started the car on the first try. Very easy to use. It came mostly charged and still had charge after first use but I wouldn’t want to try it again. If it was fully charged It would probably start two dead batteries. Wait for it to go on sale unless you need it immediately.

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.

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!