When you will connect with step up boost converter then it takes about 1 8a current so better to use an external power bank or any phone charger.
Laptop cooling fan hack.
Most computers contain two or more fans including a cpu fan a chassis fan a power supply fan and a graphics card fan.
While operating the fans generate an acoustic tone known as blade pass.
Most laptops require you to unscrew some screw s and then you have acess to the main board.
If the internal drive of the system heats up you will be at the peril of permanent data loss.
Make sure the fan on the laptop cooler is placed near the cpu and gpu.
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Also you need a good screwdriver so you wont damage the screws.
If you want to use with laptop power then don t use step up converter just directly connect usb to fans and it will take 0 7a 0 14x5 0 7 speed will be slow.
Also you need a laptop cooler that you can buy or make.