today i compiled the linux kernel on my RK3588 Reform Classic - the device was connected to on 65W USB-C power supply all the time and the battery status reported that is was continouosly charging at ~0.8A.
the cpu cores max out at 85°C, but the bigger A76 cores will not reach their max frequency after some time:
I assume its either thermal throttling or the TDP doesn’t allow a sustained full load.