Hp 632427 001 battery primary 8 cell 83whr li ion warranty 1y 148 volt 4400 mah 65 whr cells 8 warranty 12 months chemistry li ion colour black compatible with hp elitebook 8560w mobile workstation hp elitebook 8570w mobile workstation hp elitebook 8760w mobile workstation hp elitebook 8770w mobile workstation