Batterytec&reg; Laptop battery for Dell Inspiron 13Z/N311z.Inspiron 14Z/N411z.Vostro V131 V131D V131R.268X5 312-1257 312-1258 H2XW1 JD41Y N2DN5. [11.1V 4400mAh, 1 Year Warranty] Battery Type: Li-ion, Cells: 6-cell,Capacity: 4400mAh; Voltage: 11.1V. 100% New Manufacturer. To 500 charging cycles during the lifetime of the battery. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support, 12 months warranty without problems. Class A cells provide fast loads and low power consumption, chip protection offers both security and stability.