what is the mAh rating for this battery

According to the Duracell website it is 780

I am assuming they or new but what is the expiration date

Mine came dated March 2028 but that is the shelf life date not an expiration, generally these type of cells are given a 10 year shelf life which only means that they should still be good and useable up to time, currently i’m still using some that are dated 2013 in triage marker lights. The dates are on the batteries themselves that i received but not on the factory packages. I measured the voltage of them and got 3.3x on all which is as expected for this type of cell.

Are these duracell ultra lithium cr2 3v equivqlent to devices and rechargeres that take standard c or d batteries?

No they r very tiny batteries used for cameras and flashlights and stuff like that. Waaaay smaller than c or d batteries.

Do these batteries work in the first alert smoke detector?

These batteries work in the First Alert P1000 model smoke detectors, of which I purchased several from Costco in early 2013.

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Description

⚡ Power your passion with Duracell’s unstoppable 3V energy!

TRUSTED DURABILITY - Duracell’s premium quality ensures defect-free performance every time.
POWER THAT PERFORMS - Delivers consistent 3V output for uninterrupted operation in critical devices.
UNMATCHED LONGEVITY - Guaranteed 10 years of reliable power in storage—always ready when you are.
INDUSTRY LEADING BRAND - Join millions who trust the #1 battery brand for professional-grade reliability.
VERSATILE COMPATIBILITY - Perfectly engineered for high-drain devices like video cameras, lighting, and security systems.

Duracell CR2 3V Lithium Batteries deliver high power and long-lasting performance, guaranteed to hold charge for up to 10 years in storage. Ideal for professional-grade video cameras, lighting equipment, and security devices, these batteries combine trusted Duracell quality with versatile compatibility to keep your essential gear running flawlessly.

Reviews

L**N

Duracell CR 3V

These are great batteries for a very small emergency light that is very rarely used and when used it's only checked for readiness. 1 quick flip on and off and I know it's ready for 3 more months.

22.08.2025

Q**E

Duracell Never Lets Me Down

I always go with Duracell now. I’ve had too many problems with the other big brand—especially their Ultimate Lithium line, which has failed me more times than I care to remember. Duracell, on the other hand, has been consistently reliable. No more guessing—this is the brand I trust.

8.07.2025

K**Y

fast delivery

a needed, hard to find item at a fair price, and delivered quickly

5.09.2025

M**S

It's Duracell !

Smaller size Duracell better than Energizer's, just my opinion.

25.07.2025

J**I

great

great item

7.06.2025

R**Z

Good batteries but a couple of points to consider

We have multiple lights on timers. A long time ago I purchased a pack of 8 or 10 Duracell CR2 batteries on Amazon. They last very well and I still have a couple left but since they are past the expiration date I wanted to purchase more. I couldn’t find a package with more than 2 so I ordered this November 4 with 2 day delivery. November 5 it showed shipped. November 6 I got a message that it was running a day late. November 7 I got another message that it was delayed a further 2 days. When I hadn’t received it a week after ordering I decided to cancel the order and buy it in a local store. It said it was not possible to cancel this however I could refuse delivery or return it. The next day I got a message that it would be delivered November 19th! I wrote back that it was not acceptable for an item that was supposed to be delivered in 2 days would actually take 2 weeks. The next day I got a message “good news, your package will be delivered earlier than expected” November 14. To my surprise I did actually get the package today! The description on the website says guaranteed to last 10 years in storage. The expiration date on my package is March 2031 which is only 6 years and 4 months but I am keeping them because the price was fair at a little over $1 a year per battery. Final summary: great lasting batteries but don’t order if you need them right away!

15.11.2024

A**R

Sensor Batteries

These batteries are used in the sensors on my alarm system. So glad for the convenience of getting them from Amazon.

24.08.2025

D**L

Good

Uh batteries

1.09.2025

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