I have an Acer laptop (AS4820TG, it's about 2 years old), and I recently installed Windows 8 to a partition I made on my SSD (now I'm dual booting 7 and 8). My laptop's always had pretty good battery life.
On Windows 7, fully charged, windows sometimes estimates that I'll get 8.5 hours. Of course, that never happens, but nonetheless I can still squeeze a good 5-6 out of it if I'm saving power in as many ways as possible.
However, with Windows 8, on a full charge, I only get a prediction of perhaps 1.5-2 hours. It usually lasts not much more than one, even if I keep it in power saving mode and don't do anything intensive.
The one thing I know is hurting me is that with the fresh install, I lost the ability to automatically power off the optical drive. Other than that, I can't figure out what's slashing my hours! Even if it's unsolvable, can someone suggest what else might be the culprit? Thanks!
Best Answer
probably a really late reply but if you have an Nvidia graphics card download the actual Nvidia driver so optimus can disable the card when it's not needed, the fan is most likely the graphics card one. Exact same problem as you and that worked for me