Is my battery defective?

[Iphoneattack]

I recently bought a. iPhone 4s a week a ago
I love it but the battery goes down SO quickly I woke up and it was on a hundred and I used it for 50 min and now it's on 86

I played star maker and that took like 5 percent off the rest was listening to music and I surfed the web for like 5 minutes

I have followed all the tips to make the battery last longer but it still seems the same

In a day my usage is roughly 6 hours and 30

And standy is probably around 18 hrs because I charge it to 100 at night then take it off and use it next day

Is my battery defective?

 

[Macman45]

1 hours use from fully charged to 86%? No, your battery is fine. If concerned, allow it to run down until your phone shuts down, then re-charge it.

 

[Iphoneattack]

1 hours use from fully charged to 86%? No, your battery is fine. If concerned, allow it to run down until your phone shuts down, then re-charge it.

I done that

 

[Macman45]

I done that

Then I think you are fine...That's a pretty good percentage after an hours usage. Blutooth and wifi also drain your battery more quickly. I have BT off but wifi on for email etc.