what is the volts for a computer fan
1 A typical PC fan will run at 12 volts and 0.20 amps, so 16 fans combined will require 12 volts and about 3.2 amps. 2  There are several ways that you can supply this. 3  The easiest way to power your fan is to hook it up to a large 12 volt battery such as a car battery.