Hi guys, I'm new to the rc world and im having trouble understanding the whole "what battery goes with what esc and motor"

I have a hsp 1/10 electric on road car which came with a 3300kv brushless motor in it and an esc which I'm unsure of the specs ( also came with a 7.2v 2000mah battery) What I'm trying to work out is the science behind what battery and esc can be used with my motor. My understanding so far is that a motor draws a certain amount of amps and that your esc needs to be of a rating at least equal to that, but what battery can I use???? Can I use any size battery with any c rating as long as its the right voltage???

I think my motor draws 45A and I think it has a 45A esc... Can I use say a 5000mah (20C) battery?


Thanks heeps