Get Improved Battery Life Of Apple iPhone 5
Apple has filed a patent to which they describe a battery with a higher cell density. The patent is entitled “Increasing Energy Density in Rechargeable Lithium Battery Cells” and attempts to slightly alter how the battery works.
Battery charge time will remain the same, but allow for a longer usage of products due to how that energy is stored within.
Battery technology also needs to increase as to not kill a battery more quickly. On the flip side, companies that provide the processors and screens also attempt to make them more efficient, thus closing that gap a little.
It is not clear if the next gen products will get new batteries, or if this is a patent that is still in progress and will be used at a later date.