Good Job, InDenial (I’m the one in denial, not you!).
I’m thinking the CR123 also has CR123a and RCR123 (rechargeable)
Also, I’ve seen at least one manufacturer (XStar maybe?) call their protected 18650 a 18700 battery to account for the slight additional length with the protection circuit added. I don’t know how “official” this is.
Great job indeed indenial. Watch out for crocodiles
You might want to revise the 26650 = C, they are quite different. I have some of each here and the C’s measure under 25mm in diameter and 50mm in length. That would make them equivalent to 25500 as per your list, but the 26650 won’t fit into my C sized light.
The Keygos 26650’s I have measure just over 26mm diameter and just under 69mm long. They are protected cells.
They are kind of in-between C and D in size. Side by side, they dwarf my C cell primaries.
With all of the variances I have heard people talk about, is there a way to know for sure what your protected cell will measure ahead of time? I hear so many times that so and so bought cells and when they arrived, they would not fit, because they were longer than expected. Is that all just part of not adhering to standards?
I have posted here before about knowing the manufacturer of PowerPax, maker of the StoraCell battery holders. They have had a dickens of a time coming up with a holder for 18650 because virtually every maker has a different size. There are no standards basically. Kind of surprising because the underlying cells are almost identical. Variations come in add-ons: button tops, flat tops, dimples on the bottom, PCB, PCB cover, protection strip and thickness of the overwrap. Some cells have two wraps (Hi-Max, SolarForce). It's annoying as hell from a user perspective. I have 8 different brands of batteries - I need at least 4 to fit all the variations in flashlight construction - some are too long, some too short, some rattle, some won't fit in the battery tube at all.
