Which Flip Pro and how much power?
This entry is the Flip Pro Max SC-USB-F3 USB-C PD charger. The installation sheet, page 1, specifies 10–32 V input, 12/24 V nominal systems and 6 A maximum input. On a 12 V system its negotiated output reaches 36 W; the 60 W output requires a 24 V supply. A label advertising 60 W does not make that power available from every 12 V installation.
The catalog models only the DC input. USB Power Delivery negotiation, cable capability and the connected device determine the actual output; there is no fixed 60 W appliance load on the input terminals. Standby consumption is stated as less than 0.1 W.