Electrocompaniet ECT 2 - Manual (Page 6)

6
1.5 Charging the Batteries
The remote controller is charged through a standard USB cable,
included in the package with the ECT-. Please connect this cable on
the rear side of EC4.8 / EC4.9.
If the EC4.8 / EC4.9 is turned off, please turn on the system to start
the charging. You can supervise the charging process by inspecting
the main screen on the ECT-.
Example:
Connecting the ECT- to the EC4.8
Rear view of EC4.8
Battery Status
General use