SPECIFICATION: Type: MFKVP Voltage: 11.4V Capacity: 91WH Cells: 6-cell, (also compatible with Type: T05W1 Voltage: 11.1V Capacity: 72WH ) Color: Black with Two Screwdrivers, Each of our product is CE-/FCC-/RoHS-Certified. COMPATIBILITY: MFKVP Battery for Dell Precision 7510 7520 7710 7720 M7510 M7710 Series,for Dell Precision 15 7520 7510 17 7720 7710 Series Notebook. COMPATIBILITY P/N: MFKVP T05W1 TO5W1 0TWCPG TWCPG 0FNY7 RDYCT GR5D3 M28DH 1G9VM 451-BBSF 451-BBSB 451-BBSE. EASY TO INSTALL: Our MFKVP battery for Dell works exactly as described. It is also easy to install and portable, you can take it on journey or anywhere, no need to worry about that.