Starfinder player characters are assumed to have unfettered access to advanced technology. Many of the challenges in Pathfinder adventures assume your characters don't have access to this technology, and those abilities will either need to be adjusted, restricted, or the technology brought forward into your Pathfinder game. Make sure to inform your players in advance if you plan on setting firm limits on the use of the technology, such as
batteries that need charging or the need to
Craft your own ammunition. Maintaining
tech gear is going to take a significant amount of time and effort, and the frustration of trying to make do with
archaic equipment might be why the PC adventures in the first place. For more information on how Starfinder characters can use Pathfinder gear, see
Anachronistic Gear.