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PROCELLDuracell Duracell Alkaline Batteries, 9V, 12/Box

Q: Is this a good choice for smoke detectors?

It depends on whether your smoke detector is wired into the house wiring and the battery is just a backup, or if the battery is the only power source. If the battery is a backup to household power, a standard heavy duty (Non-alkaline) is best and also much cheaper, but needs to be replaced yearly. If the battery is the only power source, an alkaline battery like this is a good choice. Smoke detectors that are household wired and use the battery as a backup need a higher peak voltage to keep them from the occasional chirp sound that drives my dog crazy. A fresh/new heavy duty (non-alkaline) battery puts out over 10 volts and will easily last a year onder the light load of a smoke detector. A fresh/new alkaline battery will only put out about 9.4 - 9.5 volts, but it will handle a greater load for a longer time. My house wired smoke detectors start chirping at just under 9.4 volts, so my dog hates it if I use alkaline batteries in them.

Q: Anybody know the mah rating of these?

The box nor battery have MaH. There are charts of their website for specs and usage, but no MaH. http://ww2.duracell.com/media/en-US/pdf/gtcl/Product_Data_Sheet/NA_DATASHEETS/PC1604_US_PC.pdf

Q: what is the expiry date

The batteries I purchased in 1/2015 have a 3/2019 expiration date. It all depends on what seller you use.

4.6/5

Product ID: 315834023

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Details

Number of Batteries
12 Product
Brand
PROCELL
Battery Cell Composition
Alkaline
Recommended Uses For Product
Industrial
Unit Count
12.0 Count

Frequently Bought Together

ProCell 12 Alkaline Batteries, 9V, 12/Box

Bulk ProCell Batteries, AA, 24/Box, PC1500

PC2400 Procell AAA, 24 Count (Pack of 1)

Description

PROCELLDuracell Duracell Alkaline Batteries, 9V, 12/Box

Specifications

Item Dimensions	2.2 x 4.2 x 2 inches
Item Weight	1.3 Pounds
Battery Weight	2 Ounces
Unit Count	12.0 Count
Battery Cell Type	Alkaline
Recommended Uses For Product	Industrial Professional
Reusability	Single Use
Voltage	9 Volts

Have a Question? See What Others Asked

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