do you need root to accomplish this procedure?
Yes.
I followed this procedure and my phone just went from 100% at 11:48am to 97% at 11:50am. 96% at 11:52am. 95% at 11:54am.
I'm using the info tab from setCPU to monitor my battery.
Don't anybody go thinking any of this means that Jasonb isn't a troll btw.. I was under this bridge the other day and there he was.. Counting a huge stack of money!
It's a joke, don't kill me!
Battery stats are real though, didn't work for me.

Most usage was cell standby with 41% followed by wifi 23%. Never been a problem before.