They do make a wireless charging back. They just choose not to sell it in the US for some reason. Amazon has them in the LG brand if you are willing to pay the rather hefty price for OEM.I know they can be found online for anywhere from 10 bucks on up, but why won't LG make one?????????
Ok, whine session over......
The one sold here is allegedly OEM, just not sold direct from LG for whatever reason, however it was confirmed by them on Twitter in another post that it is made by them:
I can say it works perfectly and seems like a legit OEM part from all I can tell.