Genuine Lenovo ThinkPad T490s Battery 11.58v 57Wh — 5B10W13909

Brand-new, genuine replacement battery specifically for the Lenovo ThinkPad T490s. Rated 11.58v with a capacity of 57Wh and carrying the OEM part number 5B10W13909. This authentic Lenovo unit provides a direct swap for worn or failing batteries and restores the original power capacity and runtime for compatible T490s systems.