Flo (DF2ET) @ ::1 on X: "CMOS battery in my good old #Thinkpad #A31 needed a change. So put in a battery holder so that the next repplacement is easier 😎 https://t.co/UCMVZZtf76" /
Battery THINKPAD A30 A31 Series IBM Lenovo Batteries
IBM ThinkPad A31 CPU Replacement - iFixit Repair Guide