Works perfect, see people talking junk that can’t even hold up to 230w to charge a laptop and this that and the other. Well if your going through the cigarette outlet to charge it up, you must not have wanted it charged bad enough, or your a half-@$$ person because it works 100% fine to me but that’s probably because I take my time and I hook it straight to the battery so that I have a constant steady power supply.. if someone that has cried about it not charging your laptop through the cigarette outlet is reading this by any chance. I would like you to please reconsider and give it one more try  and just see how it does for you hooked straight to the battery this time. But I truly recommend this pro tip just for the cigarette outlet people only, hook the negative to the positive and the positive side to the negative side and your laptop will be running top notch there buckaroo. But seriously amazing product if your a man with common sense that knows how to run it. I would most def recommend it to a friend

Perfect for an automobile

I bought this to use on my boat. It did not work in the cigarette lighter plug, as my laptop drew too much power. But, when I hooked it directly to the battery with the included clips, it worked fine. I had a smaller single plug unit that I used to plug into the outlet and it worked fine. This unit draws more power, so I needed to direct connect to the battery.

works great i would recommend it to a friends and family