IPhone 5 charges really fast but loses battery life fast?

I have an iPhone 5 with the iOS 8 but since I updates to iOS 7 the battery started to lose rapidly. It would be on 100% in the morning and at about 11 would be down to 40%. It would also only take 2-3 hours to fully charge and I think that's why it's losing power so quickly. Is there a way I can stop that?

Hi it is a faulty battery needs a new one.

  • My iPhone loses battery too fast? My iPhone loses it's battery way too fast. First it was 100 and after a little while I Checked it was 50% left o. O it's back also heats which I guess makes the battery lose fast… Please answer this question do I have to change the battery or what?
  • My IPhone 4S loses battery really fast? Okay so I got the iPhone 4S for Christmas and I use it a lot. I use it like all day then I charge it over night and when it's charging it says 100% but when I unplug it, it goes straight to 99%.So I use it for like an hour then it's already at 25% why does it do that? And how can I keep it charged?
  • My internet dies, but no one else in my house loses it. What? So this thing happens every so often where my computer and iphone loses connectivity to the internet (despite having full bars). This seems to affect only my room of the house. The stranger part is that I regain connectivity both to my phone and actual computer once I restart my computer. Is there something I'm missing here? Please.
  • Is my battery life ok?(iPhone 5s/iOS 7.0.4) Is my battery life ok?(iPhone 5s/iOS 7.0.4)? Is my battery life ok?(iPhone 5s/iOS 7.0.4) Is my battery life ok?(iPhone 5s/iOS 7.0.4)Look at the TIME SINCR LAST FULL CHARGE stats, thanks in advance!