BattPit Replacement Battery for Lenovo ThinkPad W550s — Compatible with 20E20021US, 45N1124, 121500148, 45N1127, 45N1134, 45N1137

Brand New Li-ion Battery designed for Lenovo ThinkPad W550s; fits part numbers 20E20021US, 45N1124, 121500148, 45N1127, 45N1134, and 45N1137. Electrical specifications: 10.8 Volt, 4400mAh (48Wh) capacity. Built with Grade A Cells for reliable performance. Includes 1 Year Warranty and a 30 Day Money Back Guarantee.