https://www.amazon.com/dp/B09DCTJCTV?psc=1&ref=ppx_yo2ov_dt_b_product_details
I got this one, works well, and charges my iX at the full 48amps.
I have a DuoSida charger, now renamed to "BougeRV". Plugs into a standard NEMA 14-50 and comes with a nice long cable: https://www.amazon.com/BougeRV-Charger-Portable-Charging-Electric/dp/B07P9C963L
It only does 32 amps, but that's more than enough. (the most you can pull from a 14-50 outlet is 40 ams sustained).