Duracell20x INDUSTRIAL 9V ALKALINE BATTERIES MN1604 PP3, MN1604 REPLACES PROCEL

Why buy any other batteries? These last a long time; they store well without losing charge. They're good value. I use them for my wireless home alarm system, and they've performed better than any other brand I've tried.

Solid performers, steady power output, good price

These seem fine for a good price; the proof will be in their longevity

Great value batteries for undemanding applications - Can't give 5 stars as some pricier batteries last a bit longer, but I'm more than happy with these.

Good, long lasting batteries

Good value batteries that we have been using in our church radio microphones since the packaging was changed from the red/black pro cell. Seem to last a similar time and better value than domestic Duracell.

Very good, no problems

For context, I'm a working musician who has used Duracell 'Procell' then 'Industrial' for years with zero issue.The day came recently where I finally made it through the 10 pack of 9v Duracell Industrial batteries I bought 3 YEARS ago, so I needed to buy some more. After trying to find the trusty Industrial brand I am used to, I found that they had been rebranded back to 'Procell'. Ok, sure. I used Procell before they rebranded to Industrial so no big deal.WRONG!What I purchased here was not simply Procell as advertised in the listing. It was Procell 'Constant'. Duracell have now split functionality between 2 Procell brands. 'Constant' and 'Intense'.Constant is designed for low power drain equipment. These are not suitable for musical equipment at all as it does not provide enough power for the devices to function. I found this out the hard way with my active bass on a gig. For musical equipment it seems that you would need to buy Procell Intense.(By the way, almost all previous Duracell Industrial sellers are now only selling Procell Constant. Procell Intense seem to be almost impossible to find on Amazon. The only seller I found is selling them for twice their actual cost on 3rd party sites.)Yes, this is down to my own lack of due diligence. I just put too much trust in a brand I have used for years not to rebrand, split their offerings and poorly advertise that fact. However, I hope that others don't make the same mistake I did!