Replacement Laptop Battery for IBM Thinkpad R50, R50e, R51, R51e, R52 , R52, T40, T41, T42, T43 Replacement Laptop Battery for IBM Thinkpad R50, R50e, R51, R51e, R52 , R52, T40, T41, T42, T43 Voltage: 10.80V (Compatible with 11.10V) ///Capacity: 6600mAh Battery Type: Li-ion///Color: Black Dimension: 225.70 x 80.21 x 20.30 mm///Weight: 681.18 g Product Type: Replacement Battery (Brand New)