Compatibility : Specifically designed for the HP Elitebook 640 G2 G3 G4 G5 G6 G7 G8 laptop. 1 x HP Elitebook 640 G2 G3 G4 G5 G6 G7 G8 CMOS Battery. Ensure proper functioning of BIOS settings. Avoid unexpected shutdowns or system failures due to dead CMOS battery.
