Lithium AA batts at CostCo

One of the things that has been on my ‘need to buy’ list for some time has been lithium batteries. We all know that the Duracell batteries crap the bed more often than not. For critical gear like radios, GPS, etc, I only use lithium batteries. They have less self-discharge, have a long storage life, and are not usually affected by heat or cold.

Years and years ago, CostCo carried Energizer lithium batts. But, I can say with some certainty, that I have not seen them there in years. Like, at least five years, probably more like ten. Until today…

Well, geez….I wasnt planning on picking up a big batch o’ batteries but here we are.

Perhaps your CostCo carries these all the time. Mine doesn’t. So, when something like this becomes available, I feel its worth pointing out the to local LMI. If you’re within range of the Missoula CostCo, they got yer batts.

9 thoughts on “Lithium AA batts at CostCo”

They also seem to have an impressively long shelf life, low discharge rate and can take a wide range of temperatures. These are now on the Costco list of items to seek out.

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Sam’s always has them. Downside of Li batteries is that there is no “ramp” at end of life. Alkalis will let you know when they’re dying as what their powering gets dimmer or slower. Li cells just die. There’s room for having both, depending on use.

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3rdMan on January 11, 2026 at 7:52 AM said:

I run lithium batteries in all my Surefire, Inforce, and Streamlight flashlights, and they all will dim as the battery weakens, so I am not sure what you are talking about on that note.

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Shelf life is good. Have grabbed a bunch the fail that requirement.

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Because of my outdoor “activities” and lifestyle, I was always a big consumer of batteries. Except a few electronics, lithium rechargeable batteries are doing a perfect job. But not all brands…

To keep it short, I strongly recommend Eneloop (Those made in Japan, not China) batteries that I had been using for a couple decades. Some I bought originally are still going strong. (Another brand I discovered about three years ago is Ladda. And I like them.) Those batteries discharge rate while not used is very slow past 80%. I tried many other brands and none even came close to Eneloop and Ladda.

One very important point for the longevity of the battery: trickle charge.I have been using Lacrosse bc700 (most probably newer models now) for many years and “programmed” a charge under 200.

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That’s actually a good price for AA Energizer lithium batteries. I only use lithium in my devices that I do not want destroyed such as NVDs, EOTECHs, and radios. Need to check my local Costco.

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