10.3.8. State of charge does not increase fast enough or too fast when charging
This can happen when the battery monitor thinks the battery is bigger or smaller than in reality. Check if the
has been set correctly.
10.3.9. Incorrect battery voltage reading
Issue with the Vbatt+ cable, perhaps the fuse, the cable itself or one of the terminals are faulty or have loose connections.
Incorrect wiring: the Vbatt+ cable has to be connected to the positive of the battery bank, not midway of the battery bank.
In case a temperature sensor is used, make sure the sensor is connected to the positive terminal of battery bank, not midway of
the battery bank.
10.3.10. Incorrect start battery voltage reading
Starter battery voltage too low:
• Issue with the Aux cable, perhaps the fuse, the cable itself or one of the terminals are faulty or have loose connections.
Starter battery voltage missing:
connection for monitoring the voltage of a second battery [5]
10.3.11. Synchronisation issues
If the battery monitor does not synchronise automatically, one possibility could be that the battery never reaches a fully charged
state. Fully charge the battery and see if the state of charge eventually indicates 100%.
Another possibility is that the charged voltage setting should be lowered and/or the tail current setting should be increased.
It is also possible that the battery monitor synchronises too early. This can happen in solar systems or in systems that have
fluctuating charge currents. If this is the case change the following settings:
• Increase the “charged” voltage to slightly below the absorption charge voltage. For example: 14.2V in case of 14.4V absorption
voltage (for a 12V battery).
• Increase the “charged detection time” and/or decrease the tail current to prevent an early reset due to passing clouds.
Manual - SmartShunt
Page 35
Troubleshooting
