Duracell Coppertop Battery C Cell Bulk, 72 Per Case

I have had a recent rash of leaking Duracell batteries from 3 different production lots. It would appear either the production site or production process has changed -- for the worse. I have never experienced this situation with so many batteries leaking in such a short period of time. I am not even sure all of the leaking batteries actually went into devices! The dates on the batteries are Mar 2017, Mar 2018, and Dec 2022. Fortunately no devices have been ruined; I was able to carefully clean everything. What is going on?

DO NOT BUY Duracell batteries. Had them in a desk clock. After clock stopped, opened clock to replace AA battery. Battery leaking everywhere with liquid and white crust. New clock is ruined. Never had this happen with Energizer. Will Never Buy Duracell.

I do not normally write online reviews but decided to in this case to warn people of the almost 100 percent probability that the Duracell AA or AAA will leak. In browsing thru the existing reviews it is apparent that I am not the only one to have issues with these batteries. The C and D batteries do not seem to have the same problem.

I've always been a "find-a-brand-that-works-and-stick-to-it" type of girl. Duracell has ALWAYS been my battery of choice because it USED to always be more reliable and last the longest...especially in electronics. NOW??? Forget it. Ever since they introduced this (insert expletive here) DuraLock "technology", nothing lasts long at all. I used to go for at least 6 months of regular every-day usage of my wireless mouse. Now? Less than a month. First pair of DuraLock batteries I put in my wireless indoor/outdoor thermometer ruined the electronics...certain parts don't work right anymore and it's not due to leakage. LUCKILY, I haven't had any leakage that I have found, but I think it's only because I've had to replace them due to them being dead before they had the opportunity to leak. My daughter's play cash register (which she doesn't even use a lot), doesn't work more than 2 week...and doesn't even work correctly right after installing new ones. And it's NOT a problem with the toy as other batteries make it work right. Duracell REALLY needs to go back to their tried and true formula...not this manure that they're trying to feed us. Luckily, I can still find slightly older batteries (but still good and NON-DuraLock) in some Mom & Pop stores locally. If they don't fix this, I may have to go hopping down the "bunny" trail...

I installed 5 D size Duaracell batteries in an expensive focusable flashlight. The flashlight housing is tubular aluminum. at lease one of the batteries swelled in the tube making the flashlight unsuable, because the battery could not be remomved to replace it with a good battery. I do not understand why the battery swelled in the flashlight. I thought that they were manufactured so that this type of failure did not occur.