Rome Tech RTC CMOS Battery for IBM Lenovo Thinkpad T41 T43 T42 T40 T400 T410 T410I
CMOS batteries - interchangeability **PIC** - Thinkpads Forum
RTC BIOS CMOS Battery For IBM Thinkpad T40 T41 T42 T43 T41p T42p T43p 02K6572 | eBay
IBM ThinkPad T43 Battery Replacement - iFixit Repair Guide
CMOS Battery for IBM ThinkPad 560X 570 R50 T20 02K6541 02K6572 02K7078 92P0986 | Fruugo NO
RTC BIOS CMOS Battery for IBM Thinkpad T40 T41 T42 T43 T41p T42p T43p 02K6572 | eBay
10XRTC BIOS CMOS Battery for IBM Thinkpad T40 T41 T42 T43 T41p T42p T43p 02K6572 | eBay
Amazon.com: Synergy Digital CMOS/BIOS Battery, Compatible with IBM ThinkPad T43 CMOS/BIOS, (Lithium, 3V, 200mAh) Ultra High Capacity, Replacement for IBM 02K6541 Battery : Electronics