How to fix the battery drainage problem on my IPhone 4S running iOS 6.1.3?

First off, it's not jailbroken but I do have a color conversion kit on it that was put on by a third party service. Apparently other people are having the same problem with iOS 6.1.3, I'm losing 1% of my battery about every 1-3 minutes. And I don't even use it that much. I've actually only been up for an hour, and my battery has gone from 82% to 44%. I'm having to charge my phone atleast 2 times a day sometimes even three. When I was on iOS 5.1.1 and prior. My battery would last me all day (say 7am to 10pm) and at 10pm I'd still have 20% of my battery left. So I know its not a problem with my battery, or my usage or brightness or anything. It's the IOS. I'm just wondering if there's anyway to fix it. Because I've been waiting for iOS 7 for too long.

Turn brightness down and get the battery boost magic app it really works.

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