old laptop battery
hot glue gun
Step 1: Assemble
Now put the switch through the hole you made. Solder the negative wire from the fan to one prong on the switch and solder the wire from the battery terminal to the other prong. Hot glue the battery terminals and the bottom of the case back in place inside of the case. Now hot glue the battery shut. Finally, just hot glue the battery to the bottom of the fan.
Step 3: All Done..!
now just connect the good old laptop battery and flip the switch. I hope you enjoyed this instructable. please rate and comment. thanks for viewing :)