My battery is gonna die!

Today gnome-power-manager warned me about that my battery sucks :( is charging only the 42% of it's capacity, it's a shame, especially, because I don't what to do, I wish to change the laptop for a new one and with hardware that talks better with the penguin OS, like the Dell 1420, but I don't have the money right now to buy it, so I am stuck with this laptop, I like a lot this laptop, except for the lack of a super b class driver for the video card (via k8m800 chipset), because i really want compiz-fusion, FPS games (especially quake 3 mods, like ET), at least the battery for this laptop is cheap (CL$24.000), so probably I am gonna buy it when get paid of a little job that i made a few days ago.