[Q] CyanogenMod and better battery life? topic

Just a general question.

I have the Samsung Galaxy S4 Active. Phone seems to work fine however battery life is shocking. Somedays I only get to lunch. Others 5pm.

I am running the stock rom - I9295XXUCNF1 with minimal applications and certainly no obvious background apps.

I have tried Greenify which seems to help, however certainly does not save the phone. Maybe get a few hours extra.

Whats the general consensus of Cyanogen Rom. Massive improvement or minor when it comes to battery life?

I really don't want to go down the line of crippling my "Smart" phone by turning off all the smart features. Cyanogen seems like my last option.

Thanks

Paul