Cameron Sino 200mah Battery For Ibm Thinkpad T22,t23,t30,t40,t41,t42,t43,t510,t520,t530,t60,t61,w500,w520,x30,x300,x31,x32,x400 - Digital Batteries - AliExpress
Amazon.com: Rome Tech CMOS Battery for IBM Lenovo ThinkPad L390 Yoga S2 - Laptop Backup BIOS RTC 3V CR2016 Battery with 2 Pin 2 Wire Cable (1-Pack) : Electronics
IBM ThinkPad T30 Fan Assembly Replacement - iFixit Repair Guide
IBM ThinkPad T30 Battery Replacement - iFixit Repair Guide
How to replace keyboard on IBM ThinkPad T30 – Inside my laptop
Amazon.com: FCQLR 1PCS Compatible for IBM Thinkpad T20 T21 T22 T23 T30 CMOS Battery 02k6541 : Electronics
CMOS Replacement for Thinkpad T30 | Tech Support Guy