Here's a little something I did yesterday. .. sometime back I had purchased one of these,
http://www.cellphoneshop.net/microb...8&cadevice=m&gclid=CLjF28-Hmb4CFdRQOgodGmwAZQ , and wondered if it were possible to charge the watch from my Galaxy Note 2, as long as I also plugged in a micro sd cable from the adapter to my watch. And sure enough, from a 1% remaining battery on the watch and 4 hours later I was able to get a 100% charge to the watch from my smartphone. Of course it took my phone down at a rate of 10% /per hour of charge to the watch.
So my conclusion here. .. If your desperate for a charge and your phone is fully charged, buy an OTG cable and carry a micro USB cable in your pocket and you'll be good to go.
Currently I'm at 72% Battery on the watch and is been on now for 36 hours.
And. .. Just to get this out there, I tried to charge my watch from 3 different battery sources and none work. I have a zagg, a my charge, and a Chinese power pack and the watch would not accept any of those. Do is a very temperamental charging dock to the watch.
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