Why Does My iPhone 5S Battery Die So Fast?

It is already 10:10am and my phone is at 65% ALREADY! Why is my iPhone dying so fast. I haven't even been using it that much.

Let your battery fully drain then charge it all the way up to 100%
hope this helps.

  • Why does my iPhone Die so fast? It lasts about 30-40 mins on a 100%? I have a 4s I charged it for the night Then go to school with it It dies completely in about 30-40mins Was wondering if I should get a new battery
  • Why does my iPhone battery die so fast? I have boost magic, which is supposed to help my battery last longer, and I kill all my apps when I'm done using them. I go from 100 at 8am and I'm at 60 by 9:30am. And I hardly use it too, just to look up information quickly and I just set my phone aside. I let it go down to 20% battery and let it charge over night. It just started doing this recently. I also keep my brightness to pretty much 0 with the auto brightness on. And it still dies fast. What can I do?
  • Why does my iPhone 5s die fast? Every time when my iPhone get to 100% I wait 5 more minutes and than when I unplug it it stay at 100% for 1 minute or 2 and than it goes to 99% and 98% is that normal? And that happens sometimes when I wake up and unplug my phone
  • Why does my iPhone 5c battery die so fast? It started dying when my charger started messing up. Like I have to turn my charger a certain way. But I ordered a new charger, it's currently being shipped to my home. Also when my phone is on lockscreen and I come back to it my phone battery percentage be down a lot. My brightness is down, and I close my background apps. And turn Wi-Fi off when I don't need it. What's is wrong?