mppt vs pwm

jrnymn7 wrote:
We know MPPT controllers use excess voltage to create amps. But do they also use available amperage to create voltage?

They don't do just one or the other. On the IV curves the maximum power occurs at less than the maximum amps but with more voltage. MPPT is looking for the maximum power which is watts. And that maximum power is for the input to the controller. Then the controller converts that power on the output side (more amps and less voltage) for maximum power that the battery will accept.