I'm going to make this quick. I love my Rezound and extended battery (though I keep swapping them sometimes), despite the bulk. It's SO MUCH BETTER to never worry about it dying during my day. My question is, does the extended battery of a phone USUALLY last the same amount longer than the stock one, by percentage? To make this extremely simple, here is an example with REALLY EASY numbers. If a phone has a 2000 mah stock battery, and during the day it lasts 10 hours before it dies, and you get an extended battery that is 3000 mah (50% more), if ALL conditions remained the same (phone use, signal, time the screen is on, etc), it SHOULD last 15 hours, correct?