i have 2 motor heatsinks with fans and i want to ad another fan to the esc. I have them hooked up to the reciver. I think this would give me 6 volts, let me know if im wrong. Would it be bad to run 3 fans from the reciver? SHould i use a 9v battery to power all of them or 1 or 2 of them? What do you think the best way to do this is?