The problem with that is not just the amount of power, the newer dells have a chip that identifies the adapter as a dell one. Some other laptops do this with some sort of voltage divider, but the dell one I think is a bit more advanced as it can not only distinguish genuine dell adapters, but also what wattage. If you look at the auto-airs for the 8600 and the other related laptops (D800??), most of the mfgs state right on it that it won't charge them, but just power it.