This battery is not compatible with the following HP Pavilion models:
Pavilion dv4-4000 Series and up
Pavilion dv5-2000 Series and up
Pavilion dv6-3000 Series and up
The battery will protrude out the (bottom/side) of the laptop and will cause your laptop to sit at an angle. You may not be able to connect to a docking station with the extended battery.