Originally Posted by nippit
I am trying to figure out if i can squeeze an Qi or powermat receiver in there, maybe with some bulging... but not sure about the NFC and etc around the area.
New pictures in the main post! Unfortunately I'm not sure they can give you the info you want...
007shark talks about putting a magnet on the cover in this post: http://forum.xda-developers.com/show...3&postcount=17
so clearly there is room to put more in there.
The cover is already shaped thicker at the top, which is where the NFC is glued, so the battery tray is actually flat.
think there is room for something about as thick as a credit card. The case can flex a bit, but only in the middle, so anything thicker than a credit card would have to be a decent amount smaller than the battery tray (which is 105mm x 58mm) for the flexing to give more room.
I could only find a picture of a Qi receiver for the Galaxy S3. If the pad you are thinking of using is the same dimensions as that, I expect it to fit. However, getting power to the battery is another issue. The EV30 battery plug has 4 pins and they fit snugly into the PCB. You can't really attach there.
It seems much more plausible to solder the receiver to the battery's electronics at the same place as its plug is soldered. You would need to use your voltmeter to identify which of the solder points actually connect to the + and - terminals on the battery. (See picture in 1st post). Once you've soldered the wires you can attach the receiver to the battery with the double-sided tape that's already on the battery.
If you attempt an install, please let us know how it goes.! This sounds like a great mod.
Edit: I tried to reassemble phone with a credit card between battery & PCB. It was still too thick. I would guess you could fit approx. 1/2 credit card thickness, or approx. 0.35mm. However if you include the potential flex from the back cover this receiver probably could still fit.