The delivery was unfortunately some time in coming. Have I been so unaccustomed Amazon to date. Lag also possibly because a weekend in the delivery time was included. The battery certainly looks original. In terms of performance I had hoped for more. Unfortunately, this is already back aufladewürdig after 3 days. But is also always dependent on what is done with the phone everything. Because quite often MP3 files can be played with the phone, will be quite realistic for three days. Should use this battery for pure call anyone here should keep this good 4-5 days, until it needs to be recharged. Otherwise, no problems ... and by no means deficient in this price.