6 Cells Genuine HP PH06 Laptop Battery for HP 420 421 425 4320t 620 625 HP ProBook 4000 Series Laptop Battery, 10.8V 4200mAh Li-ion Battery
HP Probook 4320S, 4321S, 4325S, 4326S, 4420S, 4421S, 4425S, 4520S, 4525S, 4720S. Compaq 320, 321, 325, 326, 420, 421, 620, 621 HP 420, 425, 620, 625.