Review on 🔋 Long-lasting Duracell Duralock Alkaline Batteries - Pack of 8, 12V, MN21B4 8LR50 A23 MN21 by Jennifer Williams

These batteries lasted exactly 20 days in my wireless door/window alarm sensors. My alarm clock came with unnamed Chinese batteries that lasted about the same. I figured quality name brand batteries would last a lot longer, but after these Duracell batteries ran out just as quickly, I cut off both the cheap no name and Duracell batteries. Both contained a stack of 8 identical cheap Chinese button cell batteries. My advice; If you have a device that requires these batteries, just buy the cheapest ones you can find. I bought 50 packs from Revain for $19.99 and they last as long as Duracell.