FOCUSTEC 48 WH 6 Cell Laptop Battery 0C52861 0C52862

Replacement Battery for ThinkPad T, L, X Series

This 48 WH lithium-ion pack replaces Lenovo part numbers 0C52861 and 0C52862 across a wide range of ThinkPad models. It fits T Series machines including the T440, T440s, T450, T450s, T460, T460p, T470P, T550 and T560. Compatibility also extends to L Series L450, L460, L470 and X Series X240, X250, X270 plus the W550s and P50s. The six-cell design restores mobile runtime for professionals who rely on these business laptops.

Six-Cell Layout and 10.8 V Output

The battery uses a standard six-cell lithium-ion configuration delivering 10.8 V, matching the voltage of the original equipment. Its physical shape aligns with the internal battery bay on the listed ThinkPad models, so installation requires only a screwdriver and no adapter cables. CE, FCC and RoHS certifications confirm compliance with safety and environmental regulations. The pack is backed by a one-year warranty and email support for troubleshooting.

48 WH Capacity Decides Suitability

The single specification that determines fit is the 48 WH capacity rating. If your original battery is rated at 48 WH and carries a part number from the 0C52861, 0C52862, 45N1124 through 45N1144, 45N1769 or 121500146 to 121500148 series, this unit is a direct replacement. Buyers whose systems require a higher-capacity pack such as the 68 WH variant or a different voltage will need an alternative part not covered by this listing.