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Oscar WrightAug 14, 2025
Why is my Victron energy BlueSolar MPPT 100/15 Controller not fully charging the battery?
- CcarpenterrileyAug 14, 2025
If your Victron Energy Controller is not fully charging the battery, several factors could be at play. A poor battery connection might be the cause, so check the connection. High cable losses can also prevent a full charge; consider using cables with a larger cross-section. Additionally, a significant temperature difference between the charger and battery could be the issue; ensure the ambient conditions are similar for both. Finally, for a 24V system, make sure the correct system voltage (24V instead of 12V) is selected by the charge controller; disconnect the PV and battery, ensuring the battery voltage is above 19V, then reconnect properly.