Rome Tech BIOS CMOS battery best suits to replace your broken or non-working old Lenovo Thinkpad CMOS battery - we provide premium quality only Compatible with Lenovo ThinkPad X200 X201 X201i X200s X200si Enjoy extended reliability of the CR2032 x200 tablet CMOS battery and heat shrink of a high caliber - the CMOS battery will last you for a long time The size of the entire unit is extremely small - will fit in almost any electronic device requires 3V Battery connector with 3 pins and 3 wires Quick and simple Thinkpad battery installation takes only 10 minutes of your time. Try our customer service for resolving any issues during Think Thinkpad CMOS battery replacement