Went back to the copper tops, these were significantly shorter lived.

I was told they didn't last long at all (compared to copper tops)

Not sure on this .Will probably just stick to the copper tops!!!!!!

We go through a lot of 9 volts with our wireless mic's so we tried these because of Amazon and they work just as good as the copper tops that you can buy everywhere

We go through a lot of 9 volts with our wireless mic's so we tried these because of Amazon and they work just as good as the copper tops that you can buy everywhere

good deal same batteries i used at work just in an industry package no diff from copper top in stores

I have provided a link to data on this specific product and the copper top

I recently started buying the Procells since it was stated that they last longer than the copper-tops

Supposedly same specs as Copper Top but online review actually rate Energizer higher

We purchased these batteries for the wireless mic at church, but so far the performance is not a good as a copper top.

I used them in an alarm application during the summer where they lasted two weeks, just like the copper-tops

I've used the copper top batteries also and these have given me the same type of service.

I used to pay almost $5.00 @ for a Duracell 9 Volt Battery at my local stores ...but after replacing my smoke detectors with the new style, I decided to do a bit of research ...these batteries have the same or better ratings then the pricey Duracell copper tops

Works just as good as copper top batteries - but so much cheaper - even cheaper here than costco!

Works just as good as copper top batteries - but so much cheaper - even cheaper here than costco!

These are just like the consumer copper tops.

What a relief to install these batteries as a power backup in our A/C wired smoke detectors