I have thought about getting an extended battery but like other people have said I dont think I would how bulky it makes it. If someone does make a case for it I will definitely try it. I get decent battery life right now. I am a heavy user of my phone and it will last me all day and night with no issues.
White Samsung Galaxy S III -- Hyperdrive RLS12 S4 Theme
Asus Nexus 7 -- Vanilla RootBox
Samsung Galaxy Tab 2 7" - 4.1.1 Leak Rooted
LG Thrill -- Thrill Seeker 3.0 w/ Promethius Kernel
Kindle Fire -- CM10 AlienDroid V2.0