Hello Chris:
Not if you go for D size NiMh or NiCd cells, NiMh can be up to 11Ah
for a single D cell. I did explicitly say C or D size cells.

Cripes - 11Ah in a D cell! I had no idea - do you have a reference I
could look at? The Cyclon D cells are 2.5Ah. - seems about typical in
my cursory experience of NiMHs. 11Ah would be another story.