You're buying:

NEW HP ProBook 4405, 4406, 4410S Series Laptop Battery 6 cell

Voltage: 10.8V
Capacity: 5200mAh
Type: Li-ion

(Press CTRL + F to find your laptop model) 
Fit Laptop Model:

HP ProBook 4405 Series Notebook PC

HP ProBook 4406 Series Notebook PC

HP ProBook 4410S Series Notebook PC

HP ProBook 4411S Series Notebook PC

HP ProBook 4412 Series Notebook PC

HP ProBook 4413 Series Notebook PC

HP ProBook 4415S Series Notebook PC

HP ProBook 4416S Series Notebook PC

HP ProBook 4418 Series Notebook PC

Compatible Part Numbers:

HSTNN-DB90

HSTNN-OB90

HSTNN-I60C-4

HSTNN-I61C-4

513128-251

Condition: 
Brand NEW

Warranty: 
1 year warranty