Iphone 13 slow charging

2 hours is about right to reach 80% if you are using the little “cube” 5 watt adapter that came with older phones.

If you are using an iPad 12 watt adapter it would take about 45 minutes to reach 80%

If you bought a 20 watt Apple USB C adapter it should take about 30 minutes to reach 80%.

No matter what power source you use charging slows down significantly between 80% and 100%, because the phone’s internal charger slows the charge rate to avoid overcharging.

What are you using for a power source when charging? And how long is “forever”?

No. I use MagSafe charging with a 20w USB C Charging plug. Both our iPhone Pro 13 and 13 Pro Max, charge pretty quickly.

What power source did you use with the cable (which is not a charger, BTW. The charger is inside the phone). Did you try a different power source?