Laptop Battery PATONA for HP Elitebook 720/725/825, 4000mAh, Li-pol, 11.25V:Is your laptops battery life insufficient? This model PATONA for HP Elitebook 720/725/825, 4000mAh, Li-pol, 11.25V is a backup power supply for selected HP laptops. A dead laptop battery or a power failure wont upset you anymore. A spare laptop battery is suitable as a second battery for your travels when you cant access an electrical outlet, but still want your laptop to stay switched on. PATONA for HP Elitebook 720/725/825, 4000mAh, Li-pol, 11.25V Battery Key Features Alternative Li-pol battery Safe alternative to the original battery Capacity: 4000mAh, voltage: 11,25V Designed for HP laptops, specifically the EliteBook series Supplies your laptop with extra power if you happen to run out Keeps your laptop running and allows you to work longer Tip: Frequent use affects the performance of the battery. Please follow the instructions on correct handling and charging that can be found in the manual to prevent capacity loss.