Energizer CR1616 3 volt lithium

Had to replace the battery in my car key fob and this one fit perfectly, no issues with the connection. Definitely lasted longer than the generic brand I tried before.

Popped one into my glucose monitor and it's been reading consistently for weeks now without any low-battery warnings. The 3V lithium power seems to hold up better than the cheaper coin cells I'd tried before.

Used these in my car key fob and the 3V lithium power lasted way longer than the old generic battery I had before. Finally stopped having to replace it every few months.