Top critical review
Not the best batteries, but not dead either
January 22, 2016
Because there was no expiration date, and a 2012© on the packaging, I decided to do a simple battery test with my multimeter. Note that, even though they're a bit old, these are disposable lithium batteries, not alkaline, so they ought to have an 8-10 year shelf-life with minimal degradation
These batteries came out of the package at ~3.2V, which is about normal for a new battery, but doesn't mean they're in great shape either. After testing one on the ammeter for < 2 seconds the current fell immediately, and voltage testing afterward showed it was down to 3V even, which seems excessive even for an older battery. For the comparison I performed an identical test on a Duracell battery of the same type, which I bought at the drug store (unfortunately, they only sold Duracell brand, so this is necessarily a cross-brand comparison also) which had a 2014© and an expiration date of 2024 on the packaging. For the Duracell, the voltage out of the package read 3.3V, and after the brief current test read 3.29V. Unfortunately that single store-bought Duracell battery cost ~$6, almost as much as this pack of 5. For most low power applications, which is mainly what these button-cells are for anyway, they *ought* to work just fine, although they'll likely have a shorter life. But if you want peace of mind, I'd suggest just picking these up at your local hardware/drug/grocery store since they're common as muck these days.