I use them in things I use a lot. Like a dog clipper, which requires a battery change every time it is used, i.e. once a month. But as for the flashlights, I refuse them. Battery life is decent and Duracell is better, but I've ruined more flashlights than counting a car. I have some very expensive flashlights which of course I don't use on a daily basis and some are high lumen output (1000) so when I turn them on they should be ready to go. I've had about a year where about half of these batteries caused the flashlight to leak and that's too much to pay for a replacement. There's a new copper top with a rose gold finish that should leak less. Will try it. They're also Duracell, but quite expensive. I don't mind if they don't leak and throw away some very expensive flashlights.
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