So, I finally received my 3500mah extended battery for my LG Motion 4G. I got it from ebay, from some seller in Hong Kong.
B176 New 3500mAh Extended Battery Black Door Cover for LG MS770 Motion 4G | eBay
It came with an extended back plate.
A couple of notes:
It makes my silicone case worthless. It is simply too big for it.
The back-plate feels almost exactly the same as the stock back-plate. It is a textured crisscross pattern with a plasticity feel. I was really hoping that like with my LG Optimus V's extended backplate, and my old Blackberry Curve 8530's backplate, that the new one would be rubberized texture so that it would better fit in my hand.
So here is my main problem. I know this isn't an issue specifically with this battery or my phone, but I am having a very hard time, as a non-rooted phone, being able to calibrate the battery. The phone will charge to 100%, I attempt to discharge the battery down to zero, and then turn the phone back on right after it shuts itself down, and the battery shows 38%! I run it down again, and the battery shows true zero. But I can't figure out how to calibrate my battery without rooting my phone! I tried to run it down all the way, and then charge it. Same thing happens. I am trying to do it with the phone off this time, and we will see if it works. but this is very annoying.
I read that I might have to cycle the battery a few times with the phone off. But this could take a couple days. I would still like the use of my phone.