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• General InformationManufacturer: Lenovo Group LimitedManufacturer Website Address: http://www.lenovo.com/us/en/Brand Name: LenovoProduct Line: ThinkPadProduct Name: ThinkPad Battery 57+ (6 Cell)Product Type: BatteryBattery InformationApplication/Usage: NotebookBattery Rechargeable: YesBattery Size: Proprietary Battery SizeBattery Chemistry: Lithium Ion (Li-Ion)Battery Capacity: 5200 mAhOutput Voltage: 10.8 V DCPhysical CharacteristicsHeight: 0.8"Width: 8.1"Depth: 2"Weight (Approximate): 11.64 ozMiscellaneousCompatible to OEM Part Number: 0C5286345N114545N1149Compatibility: Lenovo ThinkPad Notebooks:T440pL440L540