Model: PRO-4320S

Type: Li-ion
Voltage: 10.8V
Capacity: 5200mAh
Cell: 6 cell

Fit for HP laptop model:

HP ProBook 4320s 4321s 4320t 4420s 4421s 4520s Series
HP Compaq 320 321 420 421 620 621 series

Part no:
HSTNN-CB1A/HSTNN-IB1A/HSTNN-LB1A/ HSTNN-UB1A/HSTNN-CB18/HSTNN-Q78C-3/HSTNN-Q78C-4/HSTNN-Q81C/HSTNN-I85C-4/HSTNN-I86C-3/HSTNN-I86C-4/HSTNN-I86C-5/HSTNN-W79C-5/HSTNN-W79C-7/HSTNN-W80C