I use my phone mainly for wifi use and I know it is a battery hog. However, what I would like to know is how much time it takes for the battery to charge. I guess it is supposed to take like 4 mins to charge 1%.  

I plugged in my phone at 11% battery at 1.00 am and at 7.00 am it was still charging at 65%. What seems to be the issue here ?   

**Update 1:**  
Going by a comment on [the post here](http://forums.androidcentral.com/samsung-galaxy-s3/257952-s3-charging-time.html), it is because of the sequence in which I connect the phone to the charger. The comment goes as follows:  

> Hi I think I found the problem as to why mine was charging slow.  Make
> sure the USB end is unplugged from the charger BEFORE plugging the
> phone end. After plugging into the phone, plug the USB to the charger
> while the charger is into the wall. Not sure why but the sequence is
> Important and affects charging rate big time.
> 
> Alex  

This is in the manual, too. Unsure as to what the internal mechanics of the charging are.