Battery issue

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http://forum.xda-developers.com – Hello guys i upgrade htc rom to cynaogenMod 10 and changed my kernel to 3.1.10 tripNDriod 009A+. I am happy with the speed and interface. it is super fast but there is battery issue. although i changed cpu clock from 1500GHZ to 1100GHz, in comparison with stock ROM the battery dies very fast merely 7 hours of normal usage :(. anybody know what should i do? :( help me please :( (HowTos)