Yes, this is my working assumption. It is why I usually refer to "123" cells without the use of any letters in front. Letters in front mean that you are refering to 123 batteries from a particular manufacturer. For example EL123 batteries are made by Energizer:but I would assume the letters before the 123A are likely manufacturer's part numbers and branding, i.e. DL123A = Duracell Lithium 123A, EL123A = Energizer Lithium 123A, etc. The battery is the same type and size, but each mfr, especially the big ones, like to put their own P/N on it
My flashlight had 2 Duracell Ultra Lithium batteries marked with "123" where you would normally find the identifier, but below is "CR17345" in smaller print. Is this just a 123 and any 123 can be used for replacement (without mixing brands, dates, remaining charge, etc), or does the CR17345 indicate a special type of 123? Sorry, this may be a stupid question, but I'm new to this. Thanks in advance.
And that is why you will see people talking about replacing a CR123 cell with a 1(6/7/8)340 or 350 cell.17345 just means that the cell is 17mm in diameter and 34.5mm long.