Energizer CR2032 3V Lithium Coin Battery - Super Pack of 20 Count - Long Lasting Power for Watches, Key Fobs, Calculators & Medical Devices

Worked as intended...The packaging needs perforation so you can remove one sealed battery at a time. I play in a band and sometimes need a fresh battery for my tuners. When I tried to tear a battery off the card, the whole packaging ripped and the battery fell out. Granted you could cut the packaging with a knife or scissors, but they’re not always available at a gig. Just a suggestion. Otherwise the batteries seem okay.Great value batteryI used these to replace the batteries in my home security door and window sensors. The previous batteries of a different brand lasted over a year. We are getting mixed results from these batteries. Some sensors didn’t last a month. Others died in three months and some are still working. I was hoping for better reliability from Energizer. The brand name is what attracted me to these particular batteries. They could be old stock, but with no date on them who can tell? I don’t recommend them.They were shipped very promptly. I have not used them up yet. No issues were observed regarding the batteries. I rely on brand name products if I am unsure of competitor's quality. I hate buying junk, even cheap junk.I needed 17 2032 batteries for my security system. They were delivered on time and for a great value.I bought 20 of these and 10 of them died within a week.Great price and quick to ship. They work as expected so far. I'm using them in digital thermometers in coolers. I've had the batteries working a little over 2 months and everything is a-ok.