Replaces OEM # 66DWX, 086D0Y, CN-086D0Y, 86D0Y, 0JNYT4, CN-0JNYT4, JNYT4, WW8N8, 0047T0, CN-0047T0, 047T0, V0W55 Fits: DELL LATITUDE 7340, LATITUDE 7440, LATITUDE 7640, LATITUDE 13 7340, LATITUDE 14 7440, LATITUDE 16 7640 Specs: 11.4V, 57WHR, 4878MAH, 3 CELL Brand New GreenTech replacement battery - 6 Month Replacement Warranty Each product has undergone rigorous testing to ensure the correct voltage, circuit protection, stable current, low self-discharge and CE / FCC / RoHS Certified for safety