NiCad really old school. One thing with NiCad, they hold a memory on amps. Nimh doesn't have memory you can discharge them to 0v. NiCad's .75amps lowest. Both NiCad & NiMh you cant discharge at 1amp. NiCads can be charge at 10% mah capacity.
Lipo's another type chemistry completely different fro NiCad's and NiMh.