I look forward with great interest to a real answer to this question.
Shelves in my local shaps are not exactly dripping with NiCad charges specifically made for 3.6V battery packs (I only ever see single-cell chargers), so what is the go?
I could make a constant current supply from scratch, but to be kind to the cells, I really need to add temperature, voltage and -dV cutouts. The latter two need to be variable to cope with different pack voltages, so I would prefer a commercial unit.
Does any such thing exist?