Battpit&trade; Laptop/Notebook Battery Replacement for HP EliteBook 2540p (6600mAh/71Wh) Type: 10.8 Volt Li-ion Laptop Battery Capacity: 6600mAh / 71Wh Condition: New 30-Day Money Back Guarantee. 1 Year Warranty This is a genuine Battpit&trade; product comes with 1 year warranty. Beware of imitation (Battpit&trade; bears no responsibility on the imitation product purchased.)! This battery will protrude out the (bottom/side) of the laptop and will cause your laptop to sit at an angle. You can not be able to connect to a docking station with this extended battery.