do the maths based on marketing numbers to see discharge rate.
At 2A you are going to need high quality batteries to sustain that discharge rate.
I’d still be contemplating a LiFePO4 battery pack as they have high discharge capability, and for the weight will give you more runtime than most other chemistries
Well, that’s why, given that I have over 100 of those 3.7v 2200mah li-ion batteries, I wanted to know if it was feasible to make a monster battery pack out of them. Sounds like it is more trouble than it is worth, even just as a goofy project.