Amazon.com: Synergy Digital CMOS/BIOS Battery, Compatible with IBM Thinkpad 600X 2645-8EU CMOS/BIOS, (Lithium, 3V, 200mAh) Ultra High Capacity, Replacement for IBM 02K6486 Battery : Health & Household
IBM ThinkPad 600X AC16V72C Notebook Adapter - BattDepot United States
12J2464 IBM Li-Ion Battery for ThinkPad 600 Series (Refurbished)