Jailbroken iPhone 5 battery drain fix?

I love the fact that my iPhone 5 is now jailbroken. But hate the fact that the battery life has been reduced (according to me though)

Read on the internet that its due to Exchange bug and apple will release the fix soon. Someone also said that one need to delete the Exchange account and re-enter the details again, which should fix the problem and so I did that but no good.

Just this morning, after putting phone on charge all night I was on the phone for 30+ mins max and after the call ended, i checked the battery and it was 76%!

Thats like before I left the house!

Wondering if there are any effective cydia fixes or tips in general that address this battery drain, would appreciate it, Thanks.