The battery I ordered two months ago, because somehow the old battery and the phone so rumzickte always crashed after not even one day. With the new battery the crashes were gone, but provide long power does not make the battery also. If you buy the S3 2 years ago the original battery was quickly run and held longer than one day. That makes this battery from the outset not even begin to work as expected. Download the whole night and only 60 - 70% by, he does hold then of the morning at half seven to a maximum of 17 clock, then it must ran again. I hear that no music, watch any movies and surf not very much. Only Whatsapp and FB are used with it. I am using the battery so not very happy and doubt as to the authenticity of Samsung, despite NFC lettering, but I can not test NFC. Going to buy today at Conrad Elektronic an original Samsung battery and hope this is better. There is the cost of battery 19.95 and has an original blister pack of Samsung including hologram etc.
That's what you get if you want to save a few mice from avarice!