I just bought 2 package with each containing 2 Cyclops Brand 123 batteries from a Big Box Retail Sporting Goods Store with a "5" in their name. I got home and installed them in my Surefire Kroma-Milspec light and got a very dim output that lasted all of ten seconds and nothing. I then put them in my back up light, another Kroma Milspec. Nothing. Tried the same with the second set and didnt even get the initial dim output. Expiration or best if used by date is May 21, 2017. I think they be wrong.
Pros: None
Cons: Dead upon purchase
This review was written in the old system and had content requirements that are different than reviews written today.