nickel-metal hydride

I haven't seen much discussion on this board regarding NiMH batteries so I'd like to start one. More specifically I'm interested in using the f-size cells. Specs: 1.2V 13Ah 220g (.485lb) For my purposes I'll need 120 (30 series/4 parallel): 36V 52Ah 26.4kg (58.2lb) Some basic math: 36V * 52Ah...