Convert a Genius speaker to run on 9 volt baterys.

Step 4: Working out how much current you need.

I thought that somthing of the size of my speekers wouldn't need 240V to run, inside found a stepdown transfourmer stating that it provided 9V at 0.3A. I did some research and found that most 9V batterys supply 200/300ma meaning that I would need two batterys in paralell to make it run if the batterys supplyed 200ma each.