By purchasing cheap batteries I have to pay dearly, because their capacity fell after only a few months of use on more than one third of the declared values. This Fenix batteries (I use 4 of them) do in a job-related and nearly daily used Fenix lamp (requires 2 batteries) been almost a year exactly what they promise. Here I measure it at every 2nd time the store with a multimeter (voltmeter) to and was able to detect any impairment. Perfect.
George B. Mrozek
