PKCELL 9V Batteries 10 Pack 9 Volt Battery for Smoke Alarms | 6F22 Square Battery Carbon Zinc Fire Alarms Smoke Detector Battery

Working great. Arrived fast.

They seem to be well constructed. I use them in the smoke detectors in our home time will tell, but for now I’m very pleased with the price and the way they appear to be constructed.

For the price I am gonna give them a 3 and not 1. But when I bought it it stated last 10 years now not even a year after is death. Plus a newones I had all of them are very low. See picture

cost effective and works well with smoke detectors

Solid 9V batteries that work exactly as expected. Great for smoke detectors and other household devices, and the 4-pack is convenient to keep extras on hand. Good value compared to some of the bigger-name brands.

Works as good as Duracell and lasts just as long. Great value.

Great value

I picked these up because the price was right for a simple 9V replacement. It is important to note that these are Carbon Zinc (often labeled "Heavy Duty"), not Alkaline or Lithium. What does that mean? They are significantly lighter and cheaper, which is great, but they typically don't last quite as long as the big name brands in high-drain devices. However, for standard uses like smoke detectors, especially if you stick to the recommended schedule of changing them once a year, they work perfectly fine and save you money. If you need a cost-effective battery for household safety devices and aren't looking for 5-year longevity without swapping, these are a solid choice.

These are a great deal. The batteries last longer than some others I bought. I use them in my metal detector, and they last a long time.

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The price is pretty reasonable and the last for an adequate period of time.

Tel que demandé.

One battery received damaged