Batterytec&reg; Laptop battery for Dell Inspiron 3421 5421 3521 5521 3721 5721,Vostro 2421 2521 0mf69 24drm 312-1387,312-1390 312-1392 312-1433 49vtp 4dmng 4wy7c 68dtp 6hy59 6k73m 6kp1n,6xh00 X29kd Xcmrd 8rt13 8tt5w 9k1vp,Dj9w6 Fw1mn G019y G35k4 Mk1r0 Mr90y,N121y Pvj7j T1g4m V1yj7 V8vnt Vr7hm W6xnm Xrdw2 Ygmtn.[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.