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
New iPhone 5S 5C Battery Life
iOS 7 and Verizon iPhone 5 battery issues - Apple Community
High Capacity 3600mAh Battery For Apple iPhone 5S 5C With Repair Machine Tools - AliExpress
Display, Cellular & WiFi - The iPhone 5s Review
Performance & Battery life : Apple iPhone 14 and 14 Plus review: Good phones, but are they worth buying? - HardwareZone.com.sg
Apple iPhone 5 - Battery Life - AT&T
Battery Life - The iPhone 5s Review
Battery Life - The iPhone 5s Review
Lab Tests: How long does the iPhone 5's battery last? | Macworld
Discussion] Battery life on 10.3.1 (iPhone 5s) is massively improved over all iOS 10 versions (including 10.3.2 beta). : r/iOSBeta