SunLabz CR2032 Lithium Coin Battery (20 Pack) 3.0V

Bought these and thought they were the right size for my door sensor but they were not. They still worked for the door sensor. They die very quick it was like the batteries were not fully charged. Still lasted a week or so. This is a good product but mainly not the right size for what I needed them for.

Very Dissatisfied!I primarily use these for workout equipment, e.g. HR monitor, Cadence monitor, watches, etc.Approximately 25% were dead upon installation, and the average lifespan of the "good" ones is 2 workouts (1 - 2.5hr each).The maximum lifespan was ONE WEEK, with everyday workouts.

Our local stores seem to be out of this particular and widely used coin battery size all the time. My guitar tuners take these coin batteries and they run out because they are frequently used. The 20 pack is very flat, fits in a drawer and I have a supply of coin batteries on hand for all the things at home that need them.

Good price. No issues yet. I'll update after u see how long they last

Nearly -ALL- the batteries were dead. I'd say around 10% were truly fully charged. You're better off paying Energizer or Duracell some bucks and getting something that works. These are literal trash.

I just got these and put them in my garage door opener. It works.I don't know how long they last.. I don't know how long the packagewill keep a charge, until I need to use them all.

Batteries came quickly in plastic tray package and work as expected. Not sure how long they last yet as I just put it in my device.

Bad batteries! Some lasted a short time, some not at all. I should have returned them but I kept trying to see if any would work. I finally bought some new batteries and they work great.