12 volt fan on 5s ?
 

my xt8 running 5s and MMMM with a temporary 7xl needs a fan on the motor. this is no NEU motor LOL>

i have a 12 volt fan mounted. u think 5s would give it a melt down?:-)

what is easiest temporary way to turn it on?

im using the stock MMM and it is working so far.
i could stick a small 2s lipo battery just for the fan but then the fan may have to little voltage.HUMMM

it will work, i have ran 5 or so packs with my fans on 18v.... 2 9v batts in series