Why does my iPhone 5s battery suddenly drop from 43% to 20% and then 10% suddenly? Is this battery to be replaced or is there something other malfunctioning? - Quora
Apple Says Manufacturing Defect is Responsible for Battery Issues in Some iPhone 5s Devices - MacRumors
Apple Replacing 'Limited' Number Of iPhone 5s With Manufacturing Issue Leading To Battery Life Problem | TechCrunch
iOS 14 Battery Drain Issues: 11 Tips to Improve iPhone Battery Life
Apple iPhone 5S battery drain issues force replacement of some units | iPhone 5S | The Guardian
Apple acknowledges iPhone 5S battery life issues - NotebookCheck.net News
What's Draining Your iPhone Battery? - Techlicious
iOS 12.4.8 Battery Life Drain & Speed On iPhone 5s / 6 Compared On Video | Redmond Pie
Apple confirms poor battery life on iPhone 5s is caused by a manufacturing issue - MobileSyrup
Apple iPhone 5s battery life test
iphone 5 and 5s fast battery draining solution by U2 heating - YouTube