Being in Oz(-tralia) I got my F6 Pro chargers from Kogan. A 40W type C w/- 12V @ 3A as one of the profiles:
https://www.kogan.com/au/buy/kogan-premium-40w-3-port-usb-charger-qc-30-type-c-pd/
.. and a 20,000mAh type C universal power bank also supporting 12V @ 3A:
https://www.kogan.com/au/buy/kogan-20000mah-power-bank-type-c-pd/
.. Kogan source all their stuff from China, but I was unable to find anything elsewhere online that matched the specs, certainly nothing that was Australian standards approved (makes plugging things in at work, etc. less fraught if the device has the “tick of approval”).
Both devices work really well. YMMV wherever you happen to live.