Battery draining exrremely in note 2

[Prafful Katiyar]

Please sir help my note2 battery drains extremely fastly!!!! Ya i rooted my device ...battery works good ..and then i installed ditto note4 rom on note2 thats time battery also working fine but after 1 month battery work worst then i slowed the speed of core to 800mhz max and 200 min..then the battery work better....then i take lumia 520 and use lumia 520 1.5 month ...after 1.5 month i take my note 2 again and i inserted sim ..that time my battery is completely empty ..after this i charged my note2 and using them but i see there is a extremely battery drainage ..drains faster then before what is do sir..the problm comes from when i used lumia and after 1.5 months i take note again ........please sir help give me a solution