You can't, and you don't know who is private labeling what, either. If you can get a data sheet, the better companies have more detailed data sheets.
Personally, I like the Energizer (primary, i.e. disposable) lithiums for nice things like my old HP logic dart that will sit in a drawer for a long time between uses, and Panasonic (formerly Sanyo) Eneloop NiMH batteries for most other things, and the cheapo Costco batteries for when I really don't care.
The three major US brands of alkaline batteries all have warranties for corrosion damage. I don't know of any other brands that do. I have seen corrosion in every brand of alkaline battery I've ever bought but have never tried to collect on any warranty.
“Energizer will repair or replace, at our option, any device damaged by leakage from Energizer MAX® Alkaline batteries either during the life of the battery or within two years following the full use of the battery.”
https://www.energizer.com/about-batteries/battery-leakage
"In the unlikely event of alkaline battery leakage, any battery operated device that is damaged by RAYOVAC® Alkaline Batteries will be repaired, replaced or refunded, at our option, as long as the batteries have not expired or been mixed by expiry date and/or battery type.”
http://www.rayovac.com/support/warranties-and-guarantees.asp...
I have a unproven suspicion that Rechargeable Energizer may actually be Panasonic cells. I tend to see them both marked as made in Japan and they both seem to be great quality.
Could be. I have no special insight into Energizer, but generally, the private-label product you buy today might not be the same six months from now. And even if they are Panasonic cells, they might not be identical to Eneloop, either.
The private-label guessing game cuts both ways, too: there are 2nd-tier alkaline manufacturers that swear they are a contract manufacturer for at least one of the major US brand names, with portions of their factory they can't show you because then you'd find out. Even if it's true, it doesn't mean the battery they sell you will be built to the same standards, with the same materials, or put through the same QA as the battery they make for someone in the battery business.
Personally, I like the Energizer (primary, i.e. disposable) lithiums for nice things like my old HP logic dart that will sit in a drawer for a long time between uses, and Panasonic (formerly Sanyo) Eneloop NiMH batteries for most other things, and the cheapo Costco batteries for when I really don't care.
The three major US brands of alkaline batteries all have warranties for corrosion damage. I don't know of any other brands that do. I have seen corrosion in every brand of alkaline battery I've ever bought but have never tried to collect on any warranty.
“Energizer will repair or replace, at our option, any device damaged by leakage from Energizer MAX® Alkaline batteries either during the life of the battery or within two years following the full use of the battery.” https://www.energizer.com/about-batteries/battery-leakage
“Duracell guarantees its batteries against defects in materials and workmanship. Should any device be damaged due to a battery defect, we will repair or replace it at our option.” https://www.duracell.com/en-ca/technology/battery-care-use-a...
"In the unlikely event of alkaline battery leakage, any battery operated device that is damaged by RAYOVAC® Alkaline Batteries will be repaired, replaced or refunded, at our option, as long as the batteries have not expired or been mixed by expiry date and/or battery type.” http://www.rayovac.com/support/warranties-and-guarantees.asp...