KIRKLANDSignature Hearing Aid Batteries 48 Pack Zinc Air, Size 10

The Kirkland battery works well and seems to last longer than other brands.

Was grateful they weren’t smashed

Best deal I've seen on hearing aide batteries in the 25 years I've been buying them. Amazing.

Kirkland, as I'm sure everyone knows, is Costco's own brand. I've been buying these batteries from Costco for years and they have been perfect. Because of Covid I didn't want to go to our local Costco so I bought two packages online. These batches have had very inconsistent quality. When I change batteries I always change both at the same time. I find with these that one side lasts a much shorter time than the other. This happens on both sides, i.e. it doesn't matter which side, sometimes the left wears out too early and sometimes the right.When I bought these I assumed they were from Costco when I saw the brand. I just looked now and they came from a 3rd party seller. I don't know whether or not Costco has authorized 3rd party sellers. They may, I just don't know for sure, but I'd guess they don't. On the other hand, to be fair, the batteries are "long dated" -- 2023.Anyway, regardless, this batch has inconsistent battery life, the first time I've had that issue ever with this brand of batteries.

There are some tips for making these batteries last even longer than they do. Pull the battery out of the hearing aid when it is not in use or at night when you are sleeping, so the battery power doesn't keep depleting. My husband swears this makes these batteries last a lot longer, by days. We have been buying this brand for years now and have always been happy with the quality and length of time the batteries last. It was convenient to order them here and have them delivered super fast.~The Rebecca Review

Good product