A
Well, yes disabling apps do help saving battery but also remember its not like you disable apps and whoops battery life has increased, there are few points you need to take care of like there are some apps like antivirus and all... even after disabling them they will automatically start running, so you need to take care of it also be sure that in rush to save battery juice you disable some system apps which could results in non functioning of the Android system !! I would say better option would be installing battery saver app over your device there are a number of then available over the store to choose from !