How To Save Battery Life iPhone 5 - iPhone 5 Battery and iOS 6 issues. - YouTube
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
Battery Life - The iPhone 5 Review
Amazon.com: mophie juice pack Helium for iPhone 5/5s/5se (1,500mAh) - Green - JPH-IP5-GRN : Everything Else
Apple iPhone 5s - Battery Life - AT&T
Battery Life - The iPhone 5 Review
iPhone 5s battery capacity 10 percent up on iPhone 5, 5c up 5 percent - 9to5Mac
iPhone 5s battery capacity 10 percent up on iPhone 5, 5c up 5 percent - 9to5Mac