NO FACTURAMOSCOMPATIBLE PARTS NUMBERS:MFKVP, TWCPG, T05W1FICHA TECNICA:VOLTAGE: 11.1 VCAPACITY: 795 MAHCELLS: 6 CELLSRECHARGE CYCLES: 500OPERATION TIME: AROUND 1.5 - 2.5 HOURS (THE ACTUAL OPERATION TIME WILL DEPEND ON HOW MUCH ELECTRICITY IS REQUIRED BY THE DEVICE AND HOW YOU USE IT).COMPATIBLE MODELS:DELL PRECISION 15 7510 7520;17 7710 7720;M7510 M7710**GARANTIA DE 6 MESES** POR DEFECTOS DE FABRICACIONSI NO VES TU EQUIPO EN LOS MODELO PUBLICADOS, PODEMOS VERIFICAR COMPATIBILIDAD