1.4.2 Charging the Battery
If the battery has been discharged for several days, you may need to charge
for several minutes before powering it on.
Use only the adapter and the USB type C cable that came with this device to
charge the battery.
When the battery power is too low, make sure to use the power adapter or put
into the cradle (strongly recommend) to charge, not the USB type C cable
connection with your computer.