You might want to check and see if you have extra programs running that you don't need. I don't know how old your system is but after a while, things can get cluttered, maybe even with spyware.  When you are running on battery, your processor is speed-stepped down to save power.  Maybe it's trying to process too much stuff for the slower CPU to handle when you're on battery so it slows down.  Try disabling speed stepping in your BIOS and see if that fixes the problem.  If so, you might want to try wiping and reinstalling your comp.

The system isn't old since it's a 9100. Someone at talknotebooks.com told me I should take the video card out of powersafe mode. I'll try this tonight and see what happens.

 

thanx