Specification: Battery type: Li-ion Voltage: 14.8V Capacity: 40Wh Cell:4 Cells recharge cycles: 500 Note: return windows will close after one month, dont worry about it, you can click on seller store on right corner ask a question and contact seller directly for 12 month warranty. Compatible P/N:M5Y1K M5YIk GXVJ3 HD4J0 HD4JO K185W KI85W WKRJ2 VN3N0 VN3NO 451-BBMG 453-BBBP W6D4J WKRJ2 6YFVW 78V9D 1KFH3 P51F P51F004 P47F P63F P60G P64G P28E P65G P52F YU12005-13001D