i just received the battery and going through the charge/discharge cycles in the instructions.
its taking me about 4 hours to discharge from 100% using an app called "Fast Discharge" from the play store...this seems really short, should i be worried about getting a replacement or is "Fast Discharge" that efficient?
settings: high cpu, high brightness, gps
edit: been using this thing for several weeks.
compared to the stock samsung battery it is nearly double.
on screen for the samsung i get about 5 hours and the hyperion about 10 bouncing between wifi and 4g.
with the extended battery and cover it weighs in at 6.5oz - a little less than half a pound
its definitely noticeable weight compared to the original battery, but feels better in the hands since the phone is thicker and your thumbs wont need to reach as deep