... refurbished, 100% compatible.No memory effect. Over 500 full charge/discharge times. Fast shipping.12 months warranty. Excellent service. This laptop battery ... laptop battery is compatible with following laptop model:Business Notebook 4200Business Notebook TC4200Business Notebook NC4200Business Notebook TC4400Business Notebook ... , Sony, Toshiba, HP, Acer, Compaq, DELL, Lenovo, Asus, and so on. So ...