A calibration charge is a controlled process used to prepare libbi’s battery modules for long-term operation. It ensures the system can correctly track the amount of energy stored and used. This is a critical part of the commissioning process.
Why a Calibration Charge Is Needed
Battery modules that have been in storage for some time may show an inaccurate State of Charge (SoC). To correct this, they must be fully charged to 100% during their first use. This full top-up allows the Battery Management System (BMS) and libbi controller to calibrate accurately.
What does this mean?
Until this charge is complete, the system cannot guarantee accurate energy readings. The calibration charge ensures energy tracking starts from a known and trusted value.
How libbi Handles the Calibration Charge
The calibration charge happens automatically when libbi is installed for the first time. During setup, the controller will display the message "Calibration Charge". The system will then begin charging from any available energy source:
- Solar or other on-site renewable generation
- Energy imported from the grid
This ensures the battery reaches full charge, regardless of weather conditions or time of day.
When the Calibration Charge Starts
The process begins during the installation wizard. After confirming the connections between the controller, inverter, and battery, the installer is asked to reboot the inverter. This reboot triggers the start of the calibration charge.
Once initiated, the controller will continue charging the battery until it reaches 100%. The system must not be powered off or interrupted during this time.
What if the Inverter is Not Connected?
If the libbi controller is unable to communicate with the inverter, the screen will display "Local Comms Lost". This indicates that the calibration process cannot begin until communication is restored.
Important
Always ensure the inverter is properly connected before completing the setup. An incomplete calibration may affect long-term battery performance and reporting accuracy.