Review on 20pcs LR41 392 384 L736 AG3 192 LR736 Watch Button Cell Battery Pack for Thermometer by Tonya Brown

Is this a bargain? No not at all. I received the batteries and immediately used 3. They still work well. But I worry that after what unopened batteries do, it shouldn't be long before all batteries rust and fail. The expiry date 2019-2012 (December 2019) is indicated on the packaging. Based on that, you would expect these batteries to have decent shelf life. However, the bottom right battery in the 2 unopened blister packs has started to rust. Something I expect to become an issue after December 2019. I am adding photos so you can see for yourself.