6-cell Laptop Battery for DELL Latitude E6400 E6500 Precision M2400 M4400 • Type: Li-Ion, Voltage:11.1V Capacity:4400mAh;6 cells • 1 year replacement warranty. • High capacity battery certified by CE and RoHS, This battery was tested and proven to match and/or exceed original specifications of DELL products • Fit Machine Models: DELL Latitude E6400 E6500 Precision M2400 M4400