Weeding Out Inefficient Batteries

[snork]

I'm in a position where I have a number of IMR batteries of varying ages and usage with no clear identification between them. Is there a way to quickly and efficiently test them for their holding power? I can charge them up and start vaping them and of course they're fine, but actually keeping comparative track of my vape time on a given one is beyond me.

Thank you.

 

[cskent]

I have several sets of AW IMR's of different ages too. A while back I accidentally mixed some of them up and was getting less runtime than I expected from my VV boxmod. To sort them out I would run it until it cut off, then check the voltage on the cells with my multimeter. The new batteries were still at around 3.5 v at cutoff, but the older cells measured around 2.6 v. After figuring out which ones were newer, and which were older, I labeled them in pairs.