I've got a T3100e, so this may be irrelevant, but FWIW: Just had to replace the Li battery in mine; cost $15 the last time, $25 today. Since there was just enough room in there for 2 alkaline AAs in a holder, I thought I'd give that a try; seems to be working fine so far, despite being only 3V instead of 3.6V. Re the HD: when mine failed a few years back, I heard lots of info that it was an ST-512 drive with a special connector. Apparently not; installed a standard 80Mb (MB? mb? mB? :) IDE drive, Disk Manager to get around the fixed drive type, and Bob's your uncle. Good luck with the cleanup. mike