Energizer CR1632 3 volt lithium

My heart rate monitor kept glitching until I swapped in this CR1632—the 3-volt lithium power is perfectly consistent. Installation was genuinely simple, just popped the old one out and this one in. Definitely the right fit for small electronics that need reliable juice.

My car key fob died on a rainy morning, so I grabbed these to swap it out. The 3-volt power held up perfectly through a week of constant use, and it was genuinely one of the easiest installs I've done.

Finally got around to swapping the old battery in my heart rate monitor and this one fit perfectly, no prying or forcing needed. It's been running steady for two weeks now without any drop-off.