How is this different from a regular AA alkaline battery?

It uses lithium chemistry instead of alkaline, so it lasts longer in most devices, weighs less and keeps working in temperatures where alkaline cells fade. It is also built to resist leaks.

Can I use it in a smoke detector?

Yes. Energizer markets it for smoke detectors, and its long shelf life and steady output suit devices that sit unused for long periods.

No. It is a single-use lithium battery and should not be put in a charger. Use NiMH AAs if you want rechargeables.

Does cold weather affect it?

It is rated to work from -40°F to 140°F, so it holds up in freezers, winter outdoor cameras and hot attics better than alkaline cells.

How long can it sit in storage?

Energizer says it holds power for up to 20 years in storage, so a spare kept in a drawer stays ready.

Can I mix it with alkaline batteries in one device?

No. Use cells of the same type and brand together. Mixing lithium and alkaline can cause uneven drain and leaks.

What do buyers say about the Energizer Ultimate Lithium AA Batteries (1 Pack)?

Rated 5 out of 5 from 3 ratings.

Where can I buy the Energizer Ultimate Lithium AA Batteries (1 Pack)?

13 stores we checked sell it, including The Home Depot, Ace Hardware, Alpine Camera, Amazon, BJ's Wholesale Club.

Energizer Ultimate Lithium AA Batteries (1 Pack)

Best price now

$43.98at The Home DepotChecked 1 h ago

Prices are checked against each store and labelled with when.

Visit The Home Depot

Energizer Ultimate Lithium AA Batteries (1 Pack)

Best price now

$43.98at The Home DepotChecked 1 h ago

Prices are checked against each store and labelled with when.

Visit The Home Depot

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Price facts

Lowest price today: $43.98 at The Home Depot (checked Nov 12, 2026).

Our take on the Energizer Ultimate Lithium AA Batteries (1 Pack)

Energizer Ultimate Lithium AA is a single lithium-iron-disulfide AA cell built for long life and extreme conditions. It works from -40°F to 140°F, weighs about a third less than alkaline AAs, and holds stored power for up to 20 years. That makes it a strong pick for smoke detectors, outdoor cameras, remotes and other low-drain or hard-to-reach devices. Against alkaline AAs it lasts longer and resists leaks, but it is not rechargeable and costs more per cell than alkaline or NiMH.

Best forSmoke and carbon monoxide detectorsOutdoor and trail cameras in cold weatherDevices left unused for long stretchesLightweight gear where every ounce counts

Pros

Longer run time than alkaline AAs
Works in extreme heat and cold
Leak-resistant construction
About one-third lighter than alkaline
Holds power up to 20 years in storage

Cons

Not rechargeable
Higher cost per cell than alkaline
Single cell per pack, so spares must be bought separately
Lithium cells should not be mixed with other battery types

Energizer Ultimate Lithium AA Batteries (1 Pack) prices at every store

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Energizer Ultimate Lithium AA Batteries (1 Pack) price history

Lowest price we've seen: $9.85 on Nov 12 at Amazon. Tracked across 13 stores since Nov 12.

About the Energizer Ultimate Lithium AA Batteries (1 Pack)

Energizer Ultimate Lithium AA batteries are lithium double A batteries with leak resistant construction. They work in extreme temperatures, from -40 degrees F to 140 degrees F.

They power a range of high-tech and household items, including smoke detectors, cameras, and children's toys and games. They weigh one-third less than standard alkaline batteries. In storage, they hold power for up to 20 years.

Type: AA (double A) lithium battery
Pack size: 1 pack
Operating temperature: -40°F to 140°F
Weight: One-third less than standard alkaline batteries
Storage life: Up to 20 years
Construction: Leak resistant
Uses: Smoke detectors, cameras, toys and games, household devices

Questions and answers

How is this different from a regular AA alkaline battery?: It uses lithium chemistry instead of alkaline, so it lasts longer in most devices, weighs less and keeps working in temperatures where alkaline cells fade. It is also built to resist leaks.
Can I use it in a smoke detector?: Yes. Energizer markets it for smoke detectors, and its long shelf life and steady output suit devices that sit unused for long periods.
Is it rechargeable?: No. It is a single-use lithium battery and should not be put in a charger. Use NiMH AAs if you want rechargeables.
Does cold weather affect it?: It is rated to work from -40°F to 140°F, so it holds up in freezers, winter outdoor cameras and hot attics better than alkaline cells.
How long can it sit in storage?: Energizer says it holds power for up to 20 years in storage, so a spare kept in a drawer stays ready.
Can I mix it with alkaline batteries in one device?: No. Use cells of the same type and brand together. Mixing lithium and alkaline can cause uneven drain and leaks.
Where is the Energizer Ultimate Lithium AA Batteries (1 Pack) cheapest?: At The Home Depot, for $43.98, as of our latest check.
What do buyers say about the Energizer Ultimate Lithium AA Batteries (1 Pack)?: Rated 5 out of 5 from 3 ratings.
Where can I buy the Energizer Ultimate Lithium AA Batteries (1 Pack)?: 13 stores we checked sell it, including The Home Depot, Ace Hardware, Alpine Camera, Amazon, BJ's Wholesale Club.