Picture of Portable Fan

I had a spare computer fan laying around along with some other parts, so I decided to make this portable fan.

Step 1: Materials


12v. computer fan

2 9 volt batteries (preferably one good and one dead)








soldering gun


safety glasses

hot glue gun

tealk2 years ago
how long can last 9v battery on that fan?
musick_08 (author)  tealk2 years ago
It depends on the brand of battery and how often you use it. I used it for maybe 20 minutes once a month and it lasted over a year. Then I put the battery in something else
hopporto4 years ago
Looks great! i like the was that the empty 9 volt serves as a wire case. great idea!!
Earths_hope5 years ago
sorry, make that about 150 RPM
Earths_hope5 years ago
How many RPM does it have? I made one of these and it works fine with 2 AA batteries and it has about 50 RPM.
omegpirate5 years ago
fun fact: those little batteries are actually know as AAAA batteries lol
Thanks for the information.  Is there such a thing as an "A" battery?  Cordially, Nehmah
no prob and not that i know of
Wasagi5 years ago
 I would use a 9v and two AA or AAA's, to get exactly 12v, but it looks like it works fine with 9v. Great job! Really good use of the battery case!
musick_08 (author)  Wasagi5 years ago
thanks (: actually at first i wanted to do that so it would get all 12 volts, but i thought it looked better with just the 9 volt, and it still works really good.
Hiyadudez5 years ago

musick_08 (author)  Hiyadudez5 years ago
thanks (: