Technical Data:

Voltage: 10,8 Volt  

Capacity: 4400mAh

Type: Li-Ion

Compatible model number: 

HP  ProBook 4320 Series, 4320s Series,  4321 Series, 4325s Series, 4320t Series, 4420s Series, 4425s Series, 4321s Series,  4520 Series,  4520s Series, 320 Series, 321 Series, 420 Series, 421 Series, 620 Series, 621 Series

Compatible part numbers: 

HSTNN-CB1A , HSTNN-CBOX , HSTNN-DB1A , HSTNN-Q78C , HSTNN-Q78C-3 , HSTNN-IB1A, HSTNN-Q78C-3, HSTNN-Q78C-4, HSTNN-Q78C-4 , HSTNN-Q81C , HSTNN-UB1A , HSTNN-W79C-5 , HSTNN-W79C-7 , HSTNN-LB1B587706-761 HSTNN-LB587706-121

Garantia: 6 meses