Confirmation of the smaller battery size comes from the iPhone 6s Introduction Video. In the video we can clearly see the battery marked with a capacity of 1715mAh. That's down from the iPhone 6 at 1810mAH.
Despite having a smaller battery, Apple hasn't changed it's specifications for battery life, meaning the company has managed to reduce power consumption thanks to its new A9 processor and iOS 9 operating system.
Well let you know how the battery life of the iPhone 6s compares to the iPhone 6 in real life, as soon as we can. Please follow iClarified on Twitter, Facebook, Google+, or RSS for updates.