Anker® new Notebook Battery HP ProBook 4510s 4510s / 4515s 4515s ct / ct 4710s 4710s / ct [Li-ion 6-cell, 4400mAh / 48Wh]
When I ordered I thought acquire a battery identical to the original. Indeed it is indicated for 2 hours of operation while the original battery takes 3-4 hours. So a little disappointed. I did not know there were batteries "on the cheap".
