Battery For Samsung Galaxy S4

Removing the battery cover reveals the microSIM slot, the nicely upgraded 2600 mAh removable battery and the microSD card slot. The memory card slot is hot-swappable, too.

Samsung I9505 Galaxy S4

Taking a peak under the hood

At this point in time, the Galaxy S4 i9505 packs an endurance rating of 69 hours as opposed to the Galaxy S4 i9500 having a rating of only 65 hours.

Clearly, the Exynos 5 Octa and its quad Cortex-A15 and quad Cortex-A7 cores have a lot of potential. Samsung is just starting to harness their power and to get the most out of both in terms of power output and optimization. Unfortunately, as things stand right now, the Exynos chipset is far from besting the Snapdragon chipset in the battery performance department. We have got to remember that the octa-core chipset did a little better with the benchmarks in the performance section however that's not enough to warrant the real-life difference in the battery life It would be interesting to see whether Samsungh would be able to improve on the performance/battery life ratio of the octa-core edition some moment in the future.