Just received the battery today. I will post more soon. first impressions 1) Battery door is a very solid and sturdy fit 2) Total height is approx 11 quarters 3) adds approx 9.55mm thickness 4) Battery weights 97 grams (FYI, OEM battery weights 50 grams) Day 2: The included instructions said to charge the battery (in the phone) for 8-12 hrs. So I just finished that step and will report in tonight with some battery stats. Day 3: 25 hrs on battery w/ 25% left (with moderate to heavy use throughout the day and night). I'm a true believer that this battery is the real deal. The extra thickness is a drawback but the way the battery door tapers does help some. I don't know how to test the NFC capabilities with the new battery door, maybe someone can tell me a way to do this. The inside to the battery door sure looks like it has the NFC hardware built in. Day 4: 24 hrs since last charge with 68% battery left (low to moderate use).