Have ordered due to the many positive reviews this button cells. I need this for a smart key. In the first round cell, which I had inserted, teamed up with the top of the key, press the button nothing. I then next inserted and the key went. But after only 3 days, the coin cell was empty again. Did then the other tried, with the same sobering results. I had feared that it might lay the key. I then still a coin cell Energizer acquired, which costs more than twice of the same 5 button cells of the same brand. With the Energizer button cell of the key worked but. Maybe I just had bad luck with me supplied button cells because of many this button cells do seem to be working. I would not even dare to attempt.
