Why my battery life is 6hours on usage?

[iMore Question]

Hey guys. I have probably problem with my battery. On link below therse a pics from my iphone from settings. Is this normal? I Turn off all settings that drain battery.Thanks for answer

 

[TerryHugs]

When did you buy the iphone 6?

 

[iOS Gravity]

You're probably going to need to replace that battery.