iGo. I just tried it with my older set and didn't have any trouble. They have several offerings depending on what your needs are and they are (or were) very good quality. You can also get them at Radio Shack (or could, haven't been in one for a while). I LOVED the convenience of it when I traveled. One power pack, several adapter, all in one little case and I can charge EVERYTHING, including several devices at once.