IPhone 5 battery lasts less than an hour from a full charge?

My battery life is appalling and from a full charge the phone will be dead within the hour. Even when I'm not using the phone the battery still drains around 10% every 20 minutes. I've got most things on my phone disabled to conserve power and I'm running the latest firmware. I changed the battery a week ago and it's exactly the same as it was before.

I don't know what to do, has anyone got an explanation or a way to resolve the problem?

Upgrade your firmware is one and I don't know which battery you used but always use the original one… Or you can use the battery case like mugen

Have you tried resetting to factory defaults with iTunes? It sometimes fixes the problem. Also make sure you have locations, parallax, 3g, background app refresh and others disabled.

Recently, I have been bothered by this issue and I found a free app to help me optimize my battery. This free app is Battery Doctor and it is easy of use. Here it is: http://freewaretube.com/battery-doctor-the-best-free-app-to-help-you-prolong-ios-battery-life/

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