Directly powering a PC with a 12v battery. Skipping the PSU

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Hello folks.

I am hoping for some advice.

I’m about to embark on a long vanlife adventure, and want to take my beloved desktop PC with me.

From what I understand, PC PSUs output 12v. I’m thinking I’ll just directly power the PC with my house battery in the van, skipping the PSU.

Does anyone know of any problems I may encounter doing this? The only problem I can imagine would occur when the battery voltage starts to drop, but surely there is some software I can install to make the PC recognize this, and shut components down (like in a laptop).

The supply power will be fused.

Any problem identifications and software recommendations are greatly appreciated.

Cheers
Emile

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