Is it possible to power the motherboard (24 pins) from a laptop power supply via dc atx?

Question

Iron

What worries me is that the ports on the laptop power supply and the converter are different. + I would like to connect 5 batteries connected in parallel with 150,000 mAh each between them (power supply and converter).
Oh, and one more thing, I want to connect an additional matrix to the computer through the controller => it will also have to be powered from the laptop (s) power supply unit (s). As you already understood, I do not know how to arrange all this. Looking forward to some wise advice :)

Answer 1

For the battery, a special controller is needed, which will charge it if it is discharged below a predetermined level and connect it when there is no voltage from the PSU.
Here's something like this https://ru.aliexpress.com/item/PWM-Solar-Controlle...
only instead of a solar panel - a power supply

Answer 2

A well-posed question contains 90% of the answer.
What? Model, manufacturer? What processor is on board?
Similarly - model, manufacturer, voltage, current, power?
A detailed description of this thing with pictures?
Are these car batteries for trucks or something at 150 Ah?
What matrix, what controller?

Answer 3

Take a closer look at the "car" DC-DC ATX power supplies. Great stuff.
www.allians.ru/psu.html
cxem.net/comp/comp77.php
compcar.ru/forum/showthread.php?t=3147