Lenovo ThinkPad X200 Battery (42T4534 / 42T4542 OEM Replacement)

This battery is designed for Lenovo ThinkPad X200 series laptops. It is a removable lithium-ion battery commonly used in X200 and X201 non-tablet models, providing stable power for office work, browsing, and general computing tasks. The most common part numbers are 42T4534 and 42T4542, along with several FRU-compatible variants used across different capacity versions (standard 6-cell and extended 9-cell).