 Some people experience sudden drops in their batteries capacity. A way to get these batteries back to full capacity is to run the "Battery Rundown" function of IBMs "PC Doctor for DOS". The program is downloadable from IBMs support site as three floppy disk images. Make sure you get the specific version of program made for your ThinkPad model. For those who do not have a floppy, David Smith prepared a [http://www.mypchelp.com/~dsmith/ibmutil/ibm_t00_pcdiag.iso bootable CD image] (dead link, 