I have this battery now for several weeks. It takes about 1 to 1.5 hours at most when I work with my notebook (Internet, write mails, etc). This time I was very careful with it, to the first time to charge it properly never have power and charged battery worked in parallel, etc. Actually, I even ordered 2 units, and they are both poor. Delivery, packaging etc was fine, but the products have not convinced me.