This is a generic, equivalent one, 100% compatible. This 2 pin connector replacement CMOS battery is designed to compatible with Lenovo IBM ThinkPad X220 X230 X200 X301 X220T X201.

Specifications:
* Product Type: generic/equivalent
* Battery Voltage: 3V
* Length: 3.5 inches
* 2 Wires - 2 Pin Connector
* Condition: new, 1 Year Warranty!
* The real time clock battery CMOS BIOS backup battery with two wires two pin connector
* Will fix the following error codes: Systems battery error / System CMOS checksum bad / System Timer error / Real-Time Clock Error

Compatible with the following Lenovo Laptop models:
Lenovo IBM ThinkPad X220 X230 X200 X301 X220T X201

Package Included:
1 x Replacement BIOS CMOS Battery for Lenovo IBM ThinkPad X220 X230 X200 X301 X220T X201