Battery last nothing, insane drain

I need help with the kernel auditor to get better battery life, i have installed last cm nighties nad last NJ2 band, i read that if u change the kernel you can get better battery stats, the battery drop really fast, with low brightness and wi-fi off, just LTE data, without GPS. I use the app called "Root Booster" and the Calibrate Battery but it's the same. I need help with the kernels.

Sorry for the bad english, is not my native lenguage
B


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