Comments by "SmallSpoonBrigade" (@SmallSpoonBrigade) on "Testing double-A batteries: dollar stores vs. major brands (Marketplace)" video.

@mailasun 1.2v is typically what AA sized NiMH batteries start at, the cutoff is typically closer to 1v, but with a regular AA battery that's going to come rather quickly after 1.2v as it's pretty far into the discharge curve.
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@chadwillett619 It's not a linear curve and it doesn't get to zero before the battery is no longer powerful enough to perform. Usually somewhere between 1.2v and 1v the battery has been discharged to the point where it can no longer power the device that it's supposed to be powering.
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@t0nyz0 If that were the case, then NiMH AA batteries wouldn't exist. All the ones I've ever seen start at 1.2v.
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@sikchan5834 I'm not sure what the specific manufacturer is, but all of the Kirkland Signature products are produced by somebody else. Usually that somebody is one of the name brands.
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For the most part, no, a battery is a battery. The only measure that typically matters is the number of mAh that are in the battery. A 9v battery is a 9v battery, as long as the mAh is the same, you shouldn't see any meaningful difference. There is some variation in how well they do with cold and how flat their discharge curve is, but chances are that any differences that you're seeing are the result of the placebo effect. If you want to see a significant difference, you have to jump to something like NiCad or NiMH which do have significantly different characteristics.
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