Nightkonic 40-Pack CR2025 3V Lithium Coin Button Cell Batteries - Long Lasting Power for Watches, Calculators, Key Fobs & Medical Devices

As you can see, I use many of these batteries monthly. Not all of them have been replaced yet. Just received a pack of 40,and the cost just $8.99. This particular size,CR2032 has become a hot seller in the past 3 yrs I used to be able to buy them at our local dollar. store,2 for $1.Not any more. I've seen them in the stores for about $5 for 2 or 3!The trick to their longevity is toALWAYS turn off before going to bed If they stay on all night,only about 3 days worth of light.Love the value. Can't beat itGood valueI purchased these batteries convinced that they would last about 25% of the expected time a brand name battery might, but with 40 batteries total, and a great price, I figured I couldn't lose.I won... BY A LOT! It's been about 6 months since I installed two of the batteries into my car key fob.(**Anyone who owns a 2015+ Mustang w/ Keyless Entry knows how fast the fob drains batteries.**)Those two batteries are still in my key fob today. Now, I don't know if the merchant behind these batteries planned to ship great batteries at first, only to substitute poor batteries after the excellent reviews were written... But I do know that the 40 batteries I received are EXCELLENT... Especially for $10.00.I have only used two batteries so far can’t comment beyond it appears to be a fair purchase.These just don't last as long as you would think they would.They work the same as the brand name, maybe just a little less longevity but overall great for the priceEncontré este paquete porque la relación del precio por unidad era mucho más favorable que otras marcas sin embargo considero que su tiempo de vida no es tan eficiente como las Panasonic que compré anteriormente. La entrega fue a Tiempo y el paquete venía bien sellado.