10.80V 4400mAh Li-ion Hi-quality Replacement Laptop Battery for HP 420 425 4320t 620 625 HP ProBook 4000 Series COMPAQ 320 321 325 326 420 421 620 621 Compatible Part Numbers: 587706-751 593572-001 BQ350AA HSTNN-CB1A

This item fits following models: (1) HP: HP 420, HP 425, HP 4320t, HP 620, HP 625. (2) HP ProBook 4000 Series: ProBook 4320s, ProBook 4321s, ProBook 4325s, ProBook 4326s, ProBook 4420s, ProBook 4421s, ProBook 4425s, ProBook 4520s, ProBook 4525s, ProBook 4720s. (3) COMPAQ: Compaq 320, Compaq 321, Compaq 325, Compaq 326, Compaq 420, Compaq 421, Compaq 620, Compaq 621. Compatible Part Numbers: 587706-751, 593572-001, BQ350AA, HSTNN-CB1A.