mobile

i got this from ebay, reviews said it was great and its not it sucks my 6 month old original battery is way better, contacts were clean no marks but water detector is not threre, was 14$ also i dont see any nfc bulge even tho it said it has it and it still activates in the phone but not sure how to test it to see if it is really there or gone

front http://imgur.com/8R4a3r2,wa4ROmi#0

back http://imgur.com/8R4a3r2,wa4ROmi#1

so is this a real battery or did i get get suckered