On Fri, 31 Jan 2014 06:53:54 +0000, Danny D. wrote:

2.1 Amps should have been plenty to both charge and run the
Samsung Galaxy S3.

Googling some more, it seems the most the Samsung Galaxy S3
will every draw is 900 mA, at least according to this:
http://forums.androidcentral.com/sam...harger-s3.html

"Tests done by users over in xda-developers show [the Samsung Galaxy S3]
limits the amount of current the battery can draw to about 0.9 amps
regardless of the current available ... Also when the battery is fully
charged it shuts down totally -- it doesn't continue trickle charging like
simpler chargers."