I updated my iphone 4s to ios 7.0.4. But now the battery is using 100% power each day? Why?

i updated my iphone 4s to ios 7.0.4. But now the battery is using 100% power each day? Why? When i connect my iphone to charge the battery the iphone after a few minutes feels very warm. When the iphone is 100% charged in the morning, in de evening the battery is very low. Bluetooth is not on.

Tips here:
http://osxdaily.com/2013/09/19/ios-7-battery-life-fix/

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