Apple Says Manufacturing Defect is Responsible for Battery Issues in Some iPhone 5s Devices - MacRumors
Apple iPhone 5s - Battery Life - AT&T
Is iOS 7.1 Draining Your Battery Life Too Fast? Try This to Resolve It | OSXDaily
Iphone 5s Battery Draining Too Fast Problem Solution
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
iPhone 5S Battery drains too quickly on standby & Phone not charging / entlädt die Batterien - YouTube