Duracell Coppertop AA Batteries - 28 Pack

These batteries are not that leak proof. I heard the ones in my TV remote bubbling last night and I opened the battery compartment to find a clear liquid coming out of the battery. I went to replace the batteries and found most of the ones left in the package had already bulged and crystallized. The expiry date for these batteries are supposed to be 2023 and they were stored at room temperature inside a living room. Does Duracell actually back their 10 year guarantee? I've had Duracell batteries leak before, but I thought these new ones would fair better.

Bought them about six years ago, and left them in my bedroom when I moved out for university. Thought they'd be fine because of the 10 year guarantee. Moved back recently and they have all leaked or broken. Don't pay the extra money for this brand, it's nothing special.