[Run 123 Riing fans direct from a 12V battery]

On 2/20/2018 at 9:46 PM, Ippo said:

Hi Run 3 :

I bought a pack of 3 Riing 12 fans for a wind tunnel science project for my son.

I want to run them directly from a 12V battery with the speed controller so he can have high and low speed.

Any idea which of the 4 wires i need to connect the 12V battery to? 

To connect the fans to your 12V battery with a speed controller, you will need to connect the +12V wire and the Ground wire of each fan to the corresponding terminals of the battery. The PWM wire can be connected to the speed controller to adjust the fan speed as desired.