Battery For HP ProBook 4320s 4325s 4326s 4421s 4425s 4520s 4525s 4420s 320 321 Description - Type: Li-ion - Capacity: 4400 mAh - Volt: 10.8 V - Size: 268.50mm x 41.50mm x 20.30mm - Color: Black Replace Part Numbers: HP: - 587706-131 - 587706-221 587706-241 587706-251 - 587706-421 587706-541 587706-741 587706-751 - 587706-761 593572-001 BQ350AA BQ350AA#ABA - BQ350AA#AC3 HSTNN-CB1A HSTNN-DB1A HSTNN-DB1B - HSTNN-I85C HSTNN-I85C-3 HSTNN-I85C-4 HSTNN-I85C-5 - HSTNN-I86C HSTNN-I86C-3 HSTNN-I86C-4 HSTNN-I86C-5 - HSTNN-IB1A HSTNN-LB1A HSTNN-Q78C HSTNN-Q78C-3 - HSTNN-Q78C-4 HSTNN-Q81C HSTNN-Q81C-3 HSTNN-Q81C-4 - HSTNN-W79C HSTNN-W79C-5 HSTNN-W79C-7 HSTNN-W80C - HSTNN-XB1A HSTNN-XB1B PH06 PH06047 - PH06047-CL 587706-121 587706-751 587706-761 - 593572-001 BQ350AA HSTNN-CB1A HSTNN-CBOX - HSTNN-DB1A HSTNN-Q78C HSTNN-Q78C-3 HSTNN-Q78C-4 - HSTNN-Q81C HSTNN-UB1A - HSTNN-W79C-5 Fit Laptop Models: COMPAQ: - Compaq 320 - Compaq 321 Compaq 325 - Compaq 326 Compaq 420 Compaq 421 - Compaq 425 Compaq 525 Compaq 620 - Compaq 621 Compaq 625 HP: HP 420 HP 421 - HP 425 HP 4320t HP 620 - HP 625 ProBook 4320s ProBook 4321s - ProBook 4325s ProBook 4326s ProBook 4420s - ProBook 4421s ProBook 4425s ProBook 4520s - ProBook 4525s What's in the box 1 x Laptop Battery