My SP3 is maybe 4 years old now and the battery life is atrocious. All I have open is Google Chrome with about 8-10 tabs and I usually just watch YouTube of Hulu videos or maybe an MLB game through the browser. I'm lucky to get 90 minutes to two hours of battery life. I have all the power settings to the lowest denominator and still have total crap for battery. When I first got it, I got six plus hours of battery consistently.