Dapter??

[BrianG]

The higher end (higher "true" C rating) tend to take less charge during the CV stage from what I've seen. The lower C rate packs (like older MA) tend to take closer to the ~15% of their charge during CV.

So, you can cheap out on the charger and get really good packs to compensate for the adaptor, or just get a decent true CC/CV charger and not worry about which packs you can charge (and get full capacity). I think you can tell which I would go with.