The original only had enough power capacity to charge your phone and tablets were left out in the cold.
Now The Mu comes in two more varieties the Mu Duo and
The Mu Tablet They also now come in black and white variations.Both support USB 5V at 2.4A which is enough to charge your iPad. The Mu Tablet is designed to do just that (and it should also charge your iPhone faster), the Duo can charge two phones, though it can also charge a tablet if only one USB port is used.
That should the Mu Tablet closed and the protrusion of the pins.
Then with the side flaps open and the live/neutral pins rotated.
It's a shame the UK plug standards are so strict (BS 1363 if interested), however the Mu does it's best to be as flat and small as possible and it would be relatively simple to build a cover that covers those protruding pins (maybe someone could start a business selling Mu covers or construct something with Sugru).Aside from the small protrusions the Mu's will just slip into laptop bag without much danger of scratching anything which is MUCH better that a normal USB charger like the Apple standard one which is a normal UK plug with the electronics in the top and all pins protruding ready to scratch all your nice shiny Apple (or other) gear. Being thin and flat they'll also slip into a backpack pocket too.
The original Mu costs £15, with the Mu Tablet £20 and Mu Duo costing £22 from their on-line shop.
Definitely recommended if you want a higher power charger that will slide into a bag/backpack etc without scratching everything to pieces (or being bulky width ways).