Lenovo 57+ 6-Cell Lithium-Ion Rechargeable Battery (Black) for ThinkPad Notebooks.

Lithium-Ion (Li-Ion) technology. 6 cell system battery. Battery energy (Watt-hours): 57 Wh. Output voltage: 10.8 V DC (nominal). Over-discharge protection to prolong the life of the battery. Stay unplugged even longer with ThinkPad Battery 57+. These rechargeable six-cell batteries use Lithium-Ion (Li-Ion) technology and can be used as replacement for aging system batteries or as a convenient spare battery. Specification Battery Size: Other MPN: 0C52863 Battery Type: Lithium Warranty: One year, Customer Replaceable Unit. Barcode: 0887770917123 Product Type: Lithium Battery Battery Size: Other Battery Type: Lithium Compatibility: ThinkPad L540, L440, T540p (dual core), T540p (quad core), T440p, W540 Cells: 6 Voltage: 10.8V Battery Capacity: 5200mAh 57Wh Environmental: Operating Temperature 5 to 35°C - Humidity 8 to 95% Pack Quantity: 1 Dimensions: 20.6cm (W) x 5.15cm (D) x 2.0cm (H) - Weight 0.33kg 134197