The battery has an NFC antenna as described, you can even see with the naked eye if you hold the battery in his hand. I got the battery 1x to 0% discharged, waited 30 minutes, again switched on and discharged to ~ 5% down. The capacity corresponding to the details, I have measured 2087mAh. I think the actual capacity corresponds to ~ 2150mAh which 50mAh alterbeding or already lost by the strong deep discharge went. My old original battery, of which I also have two and is already> Two years old, has achieved its disposal schedule. The fact had only 800-1100mAh and not even enough 3h use, when it is cold even less. Now with fresh, intact battery's reached the S3 again its full strength. My tip: when the battery is running low on capacity, ie at ~ 20% and less, and the display starts to flicker (or hangs or crashes), the Li-ion battery is already heavily damaged and has a voltage of
