I just discovered this fantastic piece of software from rightmark that allowed my battery to last longer per charge and also let the netbook run far cooler.
Let me show you what I did to my 2-in-1 dell netbook model 3147.
This freeware software allows for the throttling and tweaking of CPU voltages. My netbook had the annoying habit of running at 100% CPU especially waking from sleep mode. This neat software package fixed that issue for me!