Copying files with Admin authentication

So I got myself a retro handheld device. It's using Linux as an OS but to be more specific, I installed a fork of Batocera in its microSD. It's currently using ext4 file system. So here's my problem, I need help on how to bypass this. I plugged in the storage via USB and I couldn't copy my roms to it. I had to run administration mode in order to proceed with the file copy. But.... It expires in like every 5 minutes and tells me to re authenticate every time. How do I bypass this? I have like 100 more files to copy down.