Interesting problem:battery

Hi friends, I have a big problem.When I shut down my s3 and open it after 8 hours, my battery discharged about % 12 -15 t,that is, my S3 is discharging when it shut down. Now i ama using Turkbey rom v17 but i have the same problem with 4.0.4 and 4.1.1
What can you say about my problem?


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