For those who seem to wonder about charge rates, check this out.
"LINK need 10 post"
Qualcomm's QuickCharge 2.0, first available on most Snapdragon 800 devices. Support for the technology was there, but phone makers decided to save up on chargers, so a lot of phones ended up with slower chargers leaving users confused whether they even support QuickCharge 2.0 (the same confusion basically continues to this day, but we'll right this wrong with this article)
I know, at for me the stock charger is slow. I have a 2.5 amp, 4 port charger. That charges my phone very quickly. Also the usb cable used matters, stock cable works well. Others, that have thinner wires don't.
Update:
Did some searching, found these "LINK need 10 post" usb cables[/url] which have the thickest wires I've seen so far. I'm an Electrician, I can tell you thicker wire more current. I made my own usb cable using 18 AWG, work with my HTC but my G3 doesn't like it. LOL don't know why it won't quick charge with it.