ME is contrary to the description not an original Nokia battery; possibly to B-Ware. For the price you can probably no longer be expected, but this should then also be described in the offer so. The first battery supplied I returned to the seller because it was empty even without telephony or Internet activities very quickly. One was despite full charge shortly in Internet, the cell phone went off suddenly, because the charge indicator, just been fully, ruckzuck to "empty" status. The sent me after a complaint replacement battery is not much better, but at least he keeps, if you are not on the phone for about 3 days. Phone calls or Internet use but one wonders again how quickly a full charge has been used up. No comparison to the original. As far as I use the battery now only as a reserve on the go. From a return I have refrained given the price.