Battery Is Full; Battery Not Connected - Victron energy SmartSolar MPPT 100/30 Manual

• Reverse battery polarity. Refer to the
• The solar charger is disconnected from the battery, possibly due to cable, fuse, or circuit breaker issues. Refer to the
not connected [45] subchapter for more details.
• Incorrect charger configuration, e.g., low charge voltage or current setting. Refer to the
subchapter for more details.
• The charger is externally controlled (ESS or DVCC), which is normal and not a fault. Refer to the
controlled chapter for more details.
• The temperature-compensated charging feature is active, and the battery temperature is too high, or the feature is
misconfigured. Refer to the Wrong temperature compensation setting

8.5.1. Battery is full

Once the battery is full, the solar charger will stop or significantly reduce its charge current. This is especially evident when DC
loads are not drawing power from the battery. It is important to note that this behaviour is normal and not a fault.
To determine the battery's state of charge (SoC), check the battery monitor (if available) or inspect the charge stage indicated by
the solar charger. During the daily charge cycle, the solar cycle progresses through the following stages:
1. Bulk stage: 0-80% SoC.
2. Absorption stage 80-100% SoC.
3. Float stage: 100% SoC.
Be aware that the solar charger may detect the battery as fully charged when it's not. This happens if the charge voltages are set
too low, causing the charger to switch from absorption to float stage prematurely. Refer to the

8.5.2. Battery not connected

To ensure proper battery charging, a correct connection to the battery is crucial.
Be aware that that if the solar charger operates without a battery, it may seem connected, showing battery voltage and charge
stage in the VictronConnect app, but the charge current will be negligible or zero.
Potential reasons for a disconnected battery:
• Loose or missing battery cables.
• Loose cable connections.
• Poorly crimped cable terminals.
• A blown (or missing) fuse in the battery supply cable.
Page 45
MPPT solar charger manual
Reverse battery polarity [46]
The VictronConnect app shows a close to zero charge current.
subchapter for more details.
Battery settings too low [47]
Solar charger externally
chapter for more details.
Battery settings too low
Battery
chapter.
Troubleshooting