Had Duraleaks kill two flashlights within weeks of each other. Batteries were less than a year old.

Fuck Duracell, and all alkalines.

Edit: I take that back. Thank you Duracell for motivating me to get off my lazy arse and read up on rechargeable tech today. Becuase of those bad experiences, I now own only reargeables (mostly nimh), a few 18650, and Lithium primaries.

1. they leak all the time, I have had plenty of them leak in and out of devices. 2) they have a use-by date written on the cell, usually 10 years after manufacture. So storing them several years is reasonable to expect. But they go bad much faster. Bah.