Marine Wiring Schematic I Need To Step Down 12v DC To 7.2v DC For A Project Is There A Commercial Product Available For This?

I need to step down 12v DC to 7.2v DC for a project is there a commercial product available for this? - marine wiring schematic

This must be checked for anger robot ... I wish I could be with the same marine battery switch on the device ... That went through the circuits, it will be protected at 20A. I want something that can only direct and manage through the Son ... If I can create charts, but I prefer that the end