IBM THINKPAD R52 Reviews, Specification, Battery, Price
T23 CMOS compatibility question? - Thinkpads Forum
New Think Express models of the ThinkPad R52 notebook include a one-year limited warranty
IBM ThinkPad T41 CMOS Battery Replacement - iFixit Repair Guide
Amazon.com: 2 Pin Compatible for Lenovo IBM ThinkPad T420S T430 T430S L430 S230U R500 Replacement BIOS CMOS Battery : Electronics
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