@hardtimefor1 Good point about the ongoing issue with low-wattage chargers (links for those not in the loop: 1, 2) I hope this and other similar issues are just caused by a firmware bug and not a hardware issue. That said, you don’t need to worry about voltage for USB PD chargers, since sources of a given wattage are required to support specific voltages (fig. 7 and below). Any source over 15 W must be able to supply 9 V, 15 V for over 27 W, etc (notice that the charger pictured in the first linked thread follows these rules). Devices negotiate the highest values they can use … if they’re working as intended.
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