I must have chosen a bad vendor. Everyone knows that legit Impecca batteries are fine. Mine, however, arrived loose in a sack, with bits of the original packaging thrown in. They looked like they'd been battered in a rock tumbler. Oh, well, I thought to myself, I'm not buying them for their looks. But five months after installing four of them in a low-drain LED light in a closet, where they're only used for about a minute a day, they're nearly dead.

Batteries work great however 1 battery came fresh out of the box corroded and unusable which was disappointing.