CWK High Performance Battery for ACER Battery for TravelMate 7740 6595 5744 5742 5740 4740 Aspire 7551 5750 5742 5741 5551 AS10D41 AS10D51 AS10D5E AS10D61 AS10D71 AS10D73 AS10D75 Laptop Notebook Computer PC [6-Cell 10.8V 4400 mAh] (Blue) 24 Month Warranty Condition: Brand New - Grade A cells Battery Type: Li-ion Voltage: 11.1 Volt (10.8 Volt compatible) Capacity: 5200mAh (Better than 4400mAh) 90 Day Money Back. Buy with confidence!