Panasonic CR2032 Battery (2 pack) - Lithium Coin Cell, 3V

Product Information

The charger indicates battery status with LED lights. Some users are skeptical about the charger. It’s important to note it’s possible to misuse the charger: putting regular CR2032s in it can cause a short circuit. Capacity and Voltage — As a general rule, CR2032 battery voltage is 3V. It can vary by half a volt or so and might read differently depending on the battery’s age and use.

Testing watches, electronics, and general home gear gives us a consistent need for CR2032 batteries. As we’ve gone about finding and reviewing the best gear on the market, some of the best supporting tech has come to the surface. We’ve tested some of the longest lasting CR2032 batteries, as well as some of the cheaper entries. Who This is For Lithium is harmful and environmentally costly but very widely used. The world’s growing problem with lithium batteries is well-documented. CR2032 batteries also use an array of other common battery materials like zinc and manganese dioxide. Instead of churning through CR2032 batteries (dropping the dead ones off at an approved recycling center), try a rechargeable LIR2032. Be aware, there are a couple critical performance differences between the two. A: This is a moving target. Many last around 2 years, and some manufacturers claim a CR2032 will last up to 10 years in their devices. Say your smoke alarm uses a CR2032, and so does your watch.Varta’s CR2032 batteries don’t come cheap, but their chemistry seems especially robust. Even after nine hours in our LED booklight, the voltage remained at an average 2.99V, and it was only once we’d kept our test pair running for a further three hours that it dipped to 2.75V. While the Panasonics had a higher voltage at the end of the full 12 hours, the Varta cells did a better job of maintaining their nominal 3V voltage over the first nine hour stretch.

qualities really stand out in CR2032 batteries: reliability and lifetime. As one of our experts succinctly said, “I just want a [expletive] battery that I can forget about for a year.” Wouldn’t that be nice? We also looked at reliability; it doesn’t matter how long a battery’s supposed to last if it burns out before then. How We TestedRegardless, shelf life is the amount of time it takes for the battery to lose 10% of its initial capacity. A: Not really. Every battery uses chemicals and compounds that are harmful to us and the environment. Duracell’s CR2032 batteries promise to keep well on the shelf and perform solidly when installed. Though a few quality control issues seem to exist, they’re bound to pop up when you sell this many batteries. Duracell’s CR2032s are among the internet’s most popular.

Capacity is measured in milliampere-hours (mAh). Many CR2032 batteries have between 190 and 225 mAh capacities. What does this mean? Essentially, a CR2032 with a 200 mAh capacity can deliver 200 milliamps of current for 1 hour. Or 400 for half an hour. Or 100 for 2 hours. And so on. Get the picture? Interestingly, hemp batteries are non-toxic and have outperformed lithium batteries in tests. Just sayin’. Q: How do you dispose of CR2032 batteries properly?A: Any lithium battery should be recycled at a battery/device drop-off location. To find one near you, go here. Lithium and other toxic battery chemicals leech out of punctured batteries in landfills, making their way into soils and waterways. Q: How long should a CR2032 battery last? Shelf Life — Passive discharge limits shelf life in batteries. CR2032 batteries generally discharge at about 1% per year. Under some conditions, the rate may be a little higher. CR2032 battery dimensions are about 20mm x 3mm. Q: Do CR2032 batteries contain more toxic chemicals than other batteries? Third, and most important, these are batteries with staying power. At the nine hour mark they were level with the Duracells, still putting out 2.96V, but by 12 hours they were slightly ahead, at 2.41V. They don’t quite have the consistent output of the Varta cells and fall just behind the Panasonics, while the shelf life is eight years rather than ten. However, if you can’t get your hands on the Panasonic CR2032s, the Energizers are a great second choice. Leak-Proof Lithium-Ion Batteries — It’s very rare that fluids leak from a CR2032 battery, especially if it’s not damaged.