SPECIFICATION: Model Name: Standard Rechargeable Li-ion Battery Type M5Y1K: Battery Type: Lithium-Ion; Voltage: 14.8V; Capacity: 40Wh; Cells: 4-cells; Color: Black; Size(L*W*H) about 10.6x1.5x0.75inch; Weight: About 9oz / 0.56 lb; Condition: 100% new; Packages includes: 1PC M5Y1K laptop battery. REPLACE PART: M5Y1K M5YIK MSY1K P51F VN3N0 VN3NO OVN3N0 W6D4J WKRJ2 6YFVW 78V9D 078V9D 07G07 007G07 K185W KI85W 1KFH3 GXVJ3 P51F001 HD4J0 HD4JO 453-BBBR 451-BBUD 451-BBMG 453-BBBP 0991XP 991XP P28E P47F P51F P51F004 P52F P63F P60G P64G P65G YU12005-13001D laptop battery for dell.