GMKtec M5 Ultra Gaming Mini PC Ryzen 7 7730U (Upgraded 7430U/ 5825U) 16GB RAM 512GB SSD Dual NIC LAN 2.5GbE Desktop Computers Office Home, Triple 8K Display, WiFi 6E, USB3.2, USB-C, BT, DP, HDMI 2.0

there are many "minipc" that run off 12v and would look lonely inside that box.https://www.amazon.com/GMKtec-Nucbox-Gaming-Mini-Windoms11pro/dp/B0CQ7N6LXB/ref=sr_1_1_sspa?crid=3548ICXPWEMM7&dib=eyJ2IjoiMSJ9.7pVUjCRueMBtNiBGGzsAwIU6rpdgR-fLIk_4yb6Mo-3PWsG26truJB8mcBXcwpu_jsE3nbVMiK-ptAbgC1XUEOtPV7OJS3l6iwM4Va485oewvP11AOFON7OqLyK8Nam__yvgZTXCNzBobkb3nlnOuAtccZ1WnVCQPyMN51Mxj3wQUT6tMeJNJCnaNQFT3l2pKlfWx572AMp29sfQ-ZqCgRfUMbAw-wt870Lf9Wq0V5k.TrippFHtanRx_j7eO72SaGQZ4QCAWt-z5tKgnoRtNmk&dib_tag=se&keywords=gmktec&qid=1781701591&sprefix=gmkte%2Caps%2C244&sr=8-1-spons&ufe=app_do%3Aamzn1.fos.17d9e15d-4e43-4581-b373-0e5c1a776d5d&sp_csd=d2lkZ2V0TmFtZT1zcF9hdGY&th=1 This one runs on 19vdc, easy for a tool battery to produce.