I found car inverter yesterday, but don't know whether or not to buy. I wanna use it to charge my iPad and other stuffs like laptop. Converting DC 12V to AC 220V and USB 5V should be right. But what about the output power of 75W? Is it applicable to iPad? That's what concerns me most. By the way, what do you think the inverter's price (http://www.tinydeal.com/dc-12v-power...9--p-6426.html) ?

 

It's pretty cheap, but i would prob stay away from it. It's a no name and it's not going to be enough power for you. You should try to get one at a local store like best buy or fry's electronics. Atleast that way you can test it out and return it if it doesn't work.

That one that you were looking at says 75 watts, but i'm sure its only putting half of that out.