If anyone is looking through this thread wondering how to just fix the charging current and speed up charging, here’s a canonical one-liner to make it happen:
Run:
echo 'KERNEL=="axp20x-battery", ATTR{constant_charge_current_max}="2200000", ATTR{constant_charge_current}="2000000"' | sudo tee /etc/udev/rules.d/99-uconsole-charging.rules
And reboot.
Note that I’ve chosen a slightly lower current to balance heat with speed. Tune as desired.