BattPit Replacement Battery for Lenovo ThinkPad W550s — 10.8 Volt 4400mAh (48Wh) — Compatible with 20E20017US, 45N1124, 121500148, 45N1127, 45N1134, 45N1137

Brand New Li-ion battery designed for the Lenovo ThinkPad W550s and compatible with part numbers 20E20017US, 45N1124, 121500148, 45N1127, 45N1134, 45N1137. 10.8 Volt 4400mAh 48Wh Capacity. Built with Grade A Cells for dependable performance. Includes a 1 Year Warranty and a 30 Day Money Back Guarantee.