I have no idea about batteries other than putting them in your electronics and suddenly dead devices working again. Besides that, I have no idea why they are called "procell". Nevertheless, I bought these for my XBox controllers. (I only stopped because I got a play and charge set.) They seemed to last longer than your standard other brand batteries, but the price per battery is what I like about them. You can get branded batteries for about 33 cents each. Compare that to a fee of about $1 each. And then (if you do what I do) consider buying 144 batteries every 6 months or so. Very economical. I have never seen dead batteries in these packages. They come in their own box containing several boxes of batteries. So you don't have to search for a battery when the box dies. And since AA batteries seem to be the most common battery type, it would be great if my TV remote died (not great, but it's great I had it) or something else that takes AA batteries.
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