Bests & Worsts Reviews from Amazon

Bought two packages since overall reviews seemed good. I figured I would beat the odds. The first box I opened, the second tracker I tried to program didn’t work at all! The second box all of the trackers seemed to work until today. One day later. One of our car keys had been missing, I finally found it and went to put it on the tracker that formerly had worked. Now it no longer works at all! No sound comes out of it at all, it won’t be found by my phone, it won’t try to find my phone. How long until the other trackers lose their charge and they are brand new? The other 6 are still working great, however. I love that you can name them and take pictures as each one has a different house key assigned to help keep track as well.