b. When the battery is fully charged, you can disconnect the DC input or USB
type-c cable. If available, please keep the device in charging by DC power supply.
See the details in “2.3 Charging the Battery”.
2.3.3 Installing/Replacing the Battery
In case you need to install or replace the battery, follow the steps below to access
the battery chamber and replace the battery.
1.
Place the device on a flat surface, with the rear side facing up. Loosen the re-
taining screws on the back cover by using a Hexagon socket screwdriver with
flat head.