Anyone know a good alternative to the Zagg Sparq 6000? Must haves: 1. Can charge iPhone and iPad, 2. Plugs directly into wall, 3. At least 2 USB ports to charge multiple devices at the same time About as big as I want to go is the size of the Sparq. The Squarq fits all the above but was looking for alternatives and couldn't find any. I have the Sparq 6000 and I'm not too keen on the design. Most of the batteries I've seen need an adapter and wire to plug into a wall. Is Zagg the only company that has the wall plug prongs in the battery? Thanks!