How much battery life does the Dell Inspiron 1545 have in the different battery settings?

I have a Dell Inspiron 1545, and I always make the battery setting "high performance," so the battery life is always about 2 hours. But I was wondering how much I could get out of this laptop in the different battery settings (ex: dell, balanced, power saver). Please help. Thanks!|||You could easily get 7 to 8 hours out of it in power saver mode.