I would be very grateful if someone here could help me with a few formulas for a college project. I've tried googling various terms but have being going in circles with many conflicting results.
I need to calculate how much it costs to charge a battery, how much hydrogen is dissipated from it and how much ventilation is required to make is safe? And I have to show how these figures are derived.

Secondly. Is there any way of comparing the pros and cons of using elec over IC powered forklifts with figures?

I appreciate any help on this at all.