Lenovo T440p 57+

battery: 5200mah/7800mah

Lenovo ThinkPad T440p 57+, a 7800 mAh laptop battery, replaces the original pack in compatible ThinkPad models. The 7800 mAh capacity restores working time for office and travel use. Fits T440, T450S, X240, X250, X260, X270, T460, and T470P series. Lithium-ion cells hold charge through daily charge cycles. Installation follows the standard battery bay procedure.