A current rumor has it that the next-gen iPhone may include a slightly larger battery than the current generation iPhone 6s and iPhone 6s Plus. It’s been posted that the handset will ship with a 1735 mAH capacity and iPhone 7 Plus will feature a 2810 mAH battery. On both models, this is slightly more than the current-generation iPhones. The iPhone 6s and iPhone 6s Plus have batteries with 1715 mAH and 2750 man, respectively.
The iPhone 7 is said to share a similar appearance to the iPhone 6s and 6s Plus models, but incorporate a thinner body and redesigned antennas. A major chassis design change is currently expected for the ‘iPhone 8’ in 2017.
Battery capacity and battery life are different things of course. Although additional capacity gives the device more power budget to play with, the efficiency of the components will influence the final battery life ratings. The iPhone 6s and iPhone 6s Plus represented a significant downgrade in capacity but battery life remained constant, for example.
Apple has generally used boosts in battery capacity to improve performance and make new product thinner. The company released an official battery case last year to boost run time for the 4.7-inch iPhone 6s.
As always, the rumor is to be taken with a grain of salt, although it could point to some interesting improvements down the road.