[Q] Best rom,kernel and setting for battery life topic

hi, i want to know which is the best rom for battery life and which kernel .. for battery life the best governor without detoriorating performance is smartassv2 ? ... and what i can do to optimize the battery ? i use greenify and 2xbattery to stop the internet connection and refresh avery 15 minutes.. it s better to dont use anything ? thanks


ps do you have other advice to optimize battery ? l