How to check your iPhone battery health and tell when it's time for a replacement

Wondering what's draining your iPhone battery? Check this setting

10 ways to save battery life on your iPhone and get the most out of a single charge

iPhone 6 Plus Battery: Replacement Part / Repair Kit

PSA: Check battery health and cycles without any app

Apple Is Locking iPhone Batteries to Discourage Repair

Apple is discouraging third-party repairs by 'locking' batteries to iPhones