Apple Boosts iPhone 6S Battery Life With New Smart Battery Case
Battery Life and Charge Time - The Apple iPhone 6s and iPhone 6s Plus Review
Amazon.com: Battery Case for iPhone 6s Plus/6 Plus/7 Plus/8 Plus 8500mAh, Rechargeable Charging Case for iPhone 6Plus Extended Battery Pack Apple 6s Plus Portable Power Bank Cover for 7P 8P (Rose Gold) :
iPhone Battery and Performance - Apple Support
You can get a 128GB Apple iPhone 6s from eBay for $629.99 right now, down from $849 - PhoneArena
iPhone - Bad news for ANYONE with iPhone 6 battery life problems | Express.co.uk
iPhones 6S battery life 'varies by up to two hours depending on chip supplier' | Apple | The Guardian