<p>Well, not necessarily the best battery life, but I would like somewhere between 4 and 5 hours on powersaver mode - maybe around 2-3 on the highest settings with a bright screen. I would also like it to have a discrete graphics card and a processor of around 2.0 GHz. A standard 80 G of hard drive space would be plenty, and memory doesn't really matter since it can be upgraded. I would prefer a 12.1" screen, though I'm willing to go a little up or down. Durability and weight don't matter. I live in the US and can buy laptops online. </p>
<p>I think the laptops with the best battery life hands down would be any Apple laptop.
My Dell XPS M1530 gets a little more than 4 hours with the 9 cell battery on power saver mode.
I would think that the smaller XPS would have comparable battery life.</p>
<p>you realize you're asking for a lot..? and is there such thing as a 12.1" laptop with a discrete graphics card....</p>
<p>just look at brands you like, find the models that have discrete graphics cards, and the find which ones offer larger batteries (~9-12 cells). the XPS is probably worth looking at.</p>
<p>My MacBook Pro will get over five hours on a battery and that's not even on the lowest power settings when running Mac OSX. It will get under three hours running Windows XP. Probably a lot less than that running Windows Vista. So the operating system makes a big difference. Sure, Dell can bump up battery life with a more powerful battery as they have to offer Vista (or XP for more money).</p>
<p>I've spent a week with my Dell M1330 and it easily gets over 5 hours on battery. But it doesn't have a discrete graphics card.</p>
<p>This is running Vista x64 with the 6-cell battery.</p>
<p>If you want something with strong battery life and a discrete card, you'd want an LED backlit screen, 4200 RPM disk, knowledge on undervolting your system, etc.</p>
<p>I'm in a conference where about 250 people have MacBook Pros. The most amazing thing about these people is that the MacBook Pro is like an extension of their body.</p>
<p>Thanks for all the help, but I've already got a laptop. Supposedly, it should have about 4.5 hours on an 8-cell battery, though I haven't tested it yet.</p>
<p>"Macbook, seriously. I've never seen a windows laptop get more than 3 hours. NEVER."</p>
<p>I get 4 hours on my Toshiba on basic settings, 5 hours on basic settings with the screen dimmed, and 6 hours with various powersaving settings. The notebook is about 6 pounds, though anyone who's not a wimp shouldn't mind the difference of a few pounds... :/</p>