Software and Apps that claim to extend Battery charge Time might male people Fell better but functionally they are not really doing anything significant, they are like placebo Meds.
Set Windows Power Options under Battery to minimum Brightness that you are compatible with.
When working close all Apps/Programs that you are not using at the moment (i.e. do nor let them linger in the background).
When on Battery put the Laptop to sleep after few minutes of Not using it.
If the Laptop still run on HD replace it with SSD.
Go to Win 10 go to Settings/Privacy/Background apps, Switch off all the Apps that you do not use constantly to Off. Apps that are turning off can run when you need them but they would linger out of sight consuming Power.