Wall Panel Power 7v to 5v

I recently started my journey with my home assistant project. Everything is set up, but I have a question about one specific part. My house originally had a qolsys iq panel. I replaced it with a Amazon Fire HD 10 tablet for my home assistant dashboard. I am looking to use the original wires to get power to the tablet instead of taking it off the wall every other day. The issue is the power supply for the orginal panel is 7V, while the USB-C charger that came with the mount is 5V. Is this safe, or should I consider an alternative arrangement?