Well, I installed the ACPId and laptop tools, but no luck, it still says 'battery' while on AC.

Kernel 3.8 is supposed to have better power management:

http://www.phoronix.com/scan.php?pag...tem&px=MTI1MzQ

I get big laptops more as a portable desktop than battery life, so I don't pay attention to power settings much.

If you figure it out after you get it, please post. Thanks.

It's a good laptop, I think you'll be happy with it.