i would like to construct a whole new circuit to handle the new motors , external battery and portsI am afraid that replacing the motor directly with a faster one may not work. Because the circuitry inside the cooling pad maybe compatible with the speed of the existing motor. If you can see the model numbers of all the components, you can see the datasheets to find out the specs first.
but i dont know where to starti would like to construct a whole new circuit to handle the new motors , external battery and ports
yes, for the noise part, i would like to add a speed controller, like it have currently.More powerful motors would produce more fan noise and deplete battery charge faster. Are you ok with that?
Yeah. That will be good. I can see in your photo, there is a small PCB. If you want to design an advanced PCB by yourself for this project, you can see here: https://www.theengineeringprojects.com/2024/06/advanced-manufacturing-materials-for-pcb.htmlI am afraid that replacing the motor directly with a faster one may not work. Because the circuitry inside the cooling pad maybe compatible with the speed of the existing motor. If you can see the model numbers of all the components, you can see the datasheets to find out the specs first.