Ideally, you would get new batteries, but I get that may not be an option.
Can you get maybe 4 or 6 for your super high wattage needs, and then ONCE you decide to use for your lower wattage needs which pairs go together, well.... KEEP them together.
I'm so bad at battery marriage, I have come to decide that my brown LGs are all for two battery mods, and a few high wattage Samsungs I bought, inadvisably.
I keep all my green Samsungs that I have for a while (that aren't dead, anyway) for single battery mods. Since I tend to charge my married batteries together, they don't get divorced, and they remain my "Two battery mods."
You could do that with wraps, I guess, but I am lazy. I'm not so much a minister more a justice of the peace. Or, some chick with her marriage license from "The school of Breath and Lite, take our 40 dollar course and marry the hippies' type even.
Anna