First I’ll just get out of the way: It will jump start a 4L V6 just fine. The part of it that might be more useful an a regular basis is that it also works nicely as a portable phone charger. Because the relay an capacitor used for jump starting is in an external module that plugs into the battery, the battery unit itself is relatively small and light which makes it convenient to throw in a backpack for refilling your phone.

The flashlight on it is only mediocre (not what I would call ultra bright), but will serve its purpose if you need some light.

I like that the battery has a numerical percentage charge display so you know exactly how full it is. It comes with both wall and cigarette lighter charges an a nice case to hold everything.

Overall, a nice kit for keeping in your car.

It’s currently available for $69.99 at Amazon: http://amzn.to/1qvQK81

Full disclosure: I received this product for free or at a discount in exchange for my honest review.