You need 12V out of a 24V source and you'd rather not run a second cable just to charge your phone. This converter steps down to 12V at 5A and has a USB port on the back, so your radio, dashcam, or work light runs off the main output while your phone tops up on USB. One box, two jobs. Jaycar MP3356, RRP $91.95
| brand | Jaycar |
| model | MP3356 |
| input_voltage | 24VDC |
| output_voltage | 12VDC |
| output_current | 5A |
| usb_charging | 1 |
| category | Electronics & Components > Power & Batteries |