I got this with Costco's epic bundle deal, and am fairly disappointed with it. Having a second battery charging up is great, but it takes forever to fully charge a battery. None of the Costco accessories came with documentation, but I'm assuming the battery is charged when the little orange light on the dock turns green. Anyway, I swapped batteries around 10am this morning (spare was green and fully charged, and I had let my phone die overnight). By the time it died again, this evening, the spare wasn't done charging yet.
I got a decent 12 hours out of it today, so the charging time on the dock is pretty sad. I swapped batteries anyway, and finished charging it in my phone. When I booted, the indicator read around 70%. It's plugged into a wall using the direct plug that came in the accessory bag, not one with the detachable usb cable. I think I've gotten better results out of charging through usb, sadly. Anyone else seeing poor results from this thing?