Battery replacement
what is the price for replacing an iPhone 6 battery
iPhone 4s, iOS 9
Hi Viki194,
If the iPhone 6 is still under warranty or Apple Care + then it is free, if not, it is $49. Here is an Apple Support Document on Apple's Battery Replacement Program.
Apple: Battery Replacement Program - https://support.apple.com/iphone/repair/service/battery-power
I hope this helps.
-Percival876