If your libbi displays Code 166 / W15: BMS Charge Over Current, this indicates that the Battery Management System (BMS) has detected an overcurrent condition while the batteries are being charged.
What does this mean?
The BMS monitors battery charging to ensure safe operation, protecting the cells from overcurrent, overvoltage, and other unsafe conditions.
When the charging current exceeds the safe limit defined by the BMS, Code 166 / W15 is triggered. This is a protective measure designed to prevent:
- Damage to the battery cells
Reduced battery lifespan
Potential overheating or fire risk
During this condition, the libbi may temporarily limit or stop charging from the grid or solar PV until the current returns to a safe level.
Troubleshooting Steps
Unfortunately, there are no set troubleshooting steps for this message. Please contact the myenergi Technical Support Team for further assistance.