I patched the NFC chip onto the back of my ZeroLemon battery. I remove the NFC chip from a back cover i bought from here. I used multiple layers of copper tape to make it thick enough so that it could reach the NFC contact points.
The problem i have is that the NFC doesnt work if put the back cover on it. It works fine if i remove the back cover and bring a NFC tag close to the chip. Is there any way i can get NFC to work even with the cover on?