The Sony Xperia S is the first smartphone to bear Sony's sole brand in recent years. It is a nice smartphone. However this smartphone has a non-removable battery. Sony company claims Sony Xperia S will have to live up to its 8 hour 30 minute talktime estimates or 420 hours standby estimates. So when you decide to carry this smartphone you have to consider this: the battery is non-removable.
Canon announced a new battery grip BG-E11 which is designed for use with the recently released Canon EOS 5D Mark III digital SLR camera. The BG-E11 battery grip improves handling for EOS 5D Mark III and duplicates AF start, Focus point and AE-lock controls for vertical shooting. The Canon BG-E11 can hold two LP-E6 batteries, or four AA/LR6 cells as an alternative to extend your shooting time.