So I am thoroughly enjoying the battery life from this battery, definitely lasts way longer for me than the original.  I had been using the ZeroLemon 8500 battery (after moving up from the 7500, but whatever) and the only issue that I had with that battery is that it was smothering the antenna on the phone quite badly.  I live where I do not have great service, it isn't that terrible but it's closer to an average 2 to maybe 3 bars typically and with that battery it would fight between 1 and 2 bars, and if it got covered by almost anything be it in my pocket or under a blanket, it (c/w)ould lose service altogether.  This battery doesn't seem to be giving me the same issues, so I am very happy with its performance so far.  One thing that needs to be said, and the only reason I didn't give it all 5 stars is because of the case.  I wouldn't trust it on my phone as far as I could throw it.  Which I am not going to try.  Because it would probably break.  I ended up rigging my phone into the ZeroLemon case with this battery and it works out pretty great.  No more signal issues!