FWIW The Samsung battery cases are currently $10 cheaper than the Mophies on pre-order and unlike the Mophies, use wireless charging to interface with the phone (though the Mophies can be charged wirelessly or by a corded micro USB cable, they interface with the phone via the micro USB connector. Ironically, the Samsung cases cannot be re-charged wirelessly even though they interface with the phone wirelessly, AFAICT). I have a Samsung pack on pre-order.
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