ATC (5200mAh/56Wh) Extended Capacity Laptop Battery for HP/COMPAQ Business Notebook 8510p, Business Notebook 8510w, Business Notebook 8710p, Business Notebook 6720t, Business Notebook 7400 Series laptop replacement for HP/COMPAQ 361909-001 361909-002 372771-001 381374-001 395794-001