Dr. Battery Advanced Pro Series Laptop/Notebook Battery for HP Pavilion dv4-2164us (8800mAh/95Wh) Samsung SDI cell! 60-Day! 2 Year Warranty Type: 10.8 Volt Li-ion Advanced Pro Series Laptop Battery; Capacity: 8800mAh / 95Wh Condition: New 60-Day Money Back Guarantee. 2 Year Warranty Battery utilizes high quality Samsung SDI cells for higher performance longer life and more reliability and it guarentees to meet and/or exceed OEM specification Fast charging. Low power consumption. Built-in protection circuit ensures both safety and stability. This battery is not compatible with the following HP Pavilion models:Pavilion dv4-4000 Series and upPavilion dv5-2000 Series and upPavilion dv6-3000 Series and upThe 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.