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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Duracell CR2 3V Lithium Battery, 1 Count (Pack of 1), CR2 Battery Lithium, High Power, Long-Lasting for Video and Photo Cameras, Lighting Equipment, and More

Duracell CR2 3V Lithium Battery, 1 Count (Pack of 1), CR2 Battery Lithium, High Power, Long-Lasting for Video and Photo Cameras, Lighting Equipment, and More

Product ID: 6940467

Details

Battery Capacity
780
Battery Cell Composition
Lithium
Brand
DURACELL
Number of Batteries
2 Lithium
Recommended Uses For Product
Bicycle Camera

⏳10-Year Storage Guarantee

⚡3V High Power Output

📸Optimized for Cameras & Lighting

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Description

⚡ Power your moments, last a decade—never miss a shot!

COMPACT LIGHTWEIGHT - Slim design (0.63 x 3.5 x 3.5 in) fits seamlessly into specialty gear.
DECADE LONG SHELF LIFE - Guaranteed 10 years in storage—always ready when you are.
TRUSTED DURACELL QUALITY - Backed by a brand with 4.8-star rating and defect-free assurance.
UNMATCHED 3 V POWER BOOST - Delivers consistent high voltage for your critical devices.
VERSATILE DEVICE COMPATIBILITY - Perfect for cameras, lighting, security, and more.

Duracell CR2 3V Lithium Battery offers reliable, high-power performance tailored for specialty devices like cameras and lighting equipment. With a guaranteed 10-year shelf life and trusted Duracell quality, it ensures your gear stays powered and ready, making it the go-to choice for professionals and enthusiasts alike.

Specifications

ASIN	B00005T3DX
ASIN	B00005T3DX
Amperage	3 Amps
Antenna Location	Bicycle, Camera, Camera Flash, Photographic Lighting, Scooter
Batteries	2 Lithium Metal batteries required. (included)
Battery Capacity	780
Battery Cell Type	Lithium
Battery Weight	0.06 Pounds
Brand	DURACELL
Built-In Media	battery 2 pack
Customer Reviews	4.8 4.8 out of 5 stars (13,190)
Date First Available	October 2, 2001
Global Trade Identification Number	00041333013107
Is Discontinued By Manufacturer	No
Item Dimensions	0.63 x 3.5 x 3.5 inches
Item Type Name	2 pack battery
Item Weight	0.03 Pounds
Item model number	01310
Manufacturer	Duracell Distributing, Inc
Manufacturer	Duracell Distributing, Inc
Model Name	High Power LITHIUM CR2
Model Number	01310
Number of Batteries	2 Lithium Metal batteries required. (included)
Product Dimensions	0.63 x 3.5 x 3.5 inches; 0.48 ounces
Reusability	Single Use
UPC	041333013107
Unit Count	2.0 Count
Voltage	3 Volts
Warranty Description	Limited warranty

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