NotesCan some chargers damage my device? Yes. Not all, but definitely some. The damage is caused by the RG35XX Plus mistakenly detecting that some USB C chargers are an external device (like a USB gamepad) that needs power, and trying to apply 5V to the charger itself. This can result in either or both the RG35XX Plus and the charger to heat up - sometimes just a bit, sometimes enough to damage components or the nearby battery. Read below for an explanation about how this happens.
If I want to be safe, what chargers are definitely going to be okay to use? Anything that uses a cable with USB A on one end, and USB C on the other. The voltage and current rating of the charger itself makes no difference. This doesn't mean that no other setups will work (for instance, most tethered USB C chargers, or non e-marked C<->C cables will), but using an A<->C cable is the only straightforward way for most people to be sure.
Is there a mod to enable charging on all USB C chargers? Yes, but you lose the ability to power other devices from the USB C port on the RG35XX Plus, and it involves soldering tiny SMD components.
Is this relevant to other RG35XX family devices? Probably, but I don't know - I've only had a look at the RG35XX Plus. Specifically, mine is marked as a "RG35XX Plus V6.0, 2024-01-09" inside on the PCB.