Duracell® Coppertop 9-Volt Alkaline Batteries, Box Of 12

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.

Just had a maglite flashlight destroyed from leaking Copper Top battery. Just using in non extreme environment. Very diapointing. Third occurane of an issue in lat 8 years. It may be time to try a new brand. I used to excusively use Duracell batteries but not sure this is smart to do anymore.

I am sad to report how disappointed I am with the quality of this formerly superior product. Up until 3-5 years ago, I had _NEVER_ experienced a leak from a Duracell battery. I didn't care how much they cost, I didn't care what the competition's performance or warranty was, in my experience Duracell _NEVER_ leaked. With all the failures I've seen in the last several years, that's clearly changed now, and with a couple recent failures I had decided to start tracking a lengthly list of all the devices I own with batteries, when the batteries were put in the device, and what the 'fresh until' date was. My hope is to minimize the risk of damage due to leakage by replacing batteries long before they are exhausted. I was willing to continue to still consider Duracell BUT, right now I am staring at a package of bulk (40 count) AAs, purchased in the last year or so, labeled 'best before 2022' and 'guaranteed for 10 years in storage' and in it is a battery WHICH HAS ALREADY LEAKED. That's right, a never used battery, labeled "Dec 2022", has already failed. I was about to swap all of these batteries into various devices, but why would I put these batteries in anything? You would be wise to consider going back to whatever it was you were doing 5+ years ago.

I've used Duracell for years. Last year the one in my keyless garage door opener died after 8 years of service. So I purchased and installed a 9V Duracell Duralock in September of 2012. Today, it died and I was locked out after dropping off my car for repair. Later, on checking with a voltmeter, the battery read near zero. I checked the last one from the same package and it read well over 9V. I put it in and the opener now works. But I wonder for how long. And I have a couple in smoke detectors. A single failure (never before with Duracell)? Or a pattern. Other reviews make it look like a pattern. I will reconsider my commitment to Duracell.

This product leaked and destroyed a 300 dollar electronic flash unit. The date on the battery was 2016 (leak occurred in 2011). These batteries were never even used. They were inserted in the flash, the flash was tested, turned off and stored. Two months later the Nikon sb 600 is useless. I can't recommend these batteries for use in anything but a throw away product.