Oddly, Apple is using smaller batteries inside the iPhone 8 and iPhone 8 Plus. Both phones passed through China’s TENAA for approval, and the size of their batteries were listed.
The iPhone 8 has a 1821mAh battery and the iPhone 8 Plus has a 2675mAh battery, which are down from their predecessors by about 7 percent. While the regular model’s battery size is still above the iPhone 6 and iPhone 6s, the Plus model’s is the lowest ever.
Apple proclaimed at its launch event that the A11 Bionic processor allows for these two phones to run more efficiently than any other iPhone before them.
The drop in size of the batteries shouldn’t be concerning to you. For years Apple’s been utilizing batteries smaller than its competitors, and yet battery life on an iPhone has remained strong.
Other companies with Android phones often have to pack much larger batteries due to the hardware consuming a ton of power and the software not being completely optimized. So, if you’re considering the iPhone 8 or iPhone 8 Plus, breathe easy. Your phone’s battery life will be what you expect.