Here's my 10 year-old daily-driven ThinkPad L420, a machine that I have a lot of emotional bond towards because it has been working quite reliably for that amount of years, I hope
Lenovo ThinkPad L420 Battery
Lenovo ThinkPad L420, L421, L520 Windows XP, Vista, Windows 7, Windows 8 Drivers, Software | Notebook Drivers
LENOVO THINKPAD L420 HARDWARE MAINTENANCE MANUAL Pdf Download | ManualsLib