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
6 Cell Battery for IBM lenovo Thinkpad R50 R51 R52 T40 T41 T42 T43 92P1089 | eBay
RTC BIOS CMOS Battery for IBM Thinkpad T40 T41 T42 T43 T41p T42p T43p 02K6572 | eBay
Synergy Digital CMOS/BIOS Battery, Works with IBM ThinkPad T42 CMOS/BIOS, (Li-Ion, 3V, 200 mAh) Ultra High Capacity, Compatible with Evesham 02K6541 Battery - Walmart.com - Walmart.com
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9-Cell 80Whr Li-Ion Laptop Battery for IBM - Walmart.com - Walmart.com
92P1070 - IBM Lenovo 6-Cell 10.8V 4400mAh Li-Ion Battery for ThinkPad R50 T40 T41 T42 Series