Battery Supply Issue - Victron energy SmartSolar MPPT RS 450 100 Manual

• The solar charger is externally controlled.
• Natural battery behaviour.
In some of these cases the VictronConnect app will show, at the bottom of the status screen, a clickable link with the text "why is
the charger off". If the link is clicked, an explanation will appear as to why the charger is off.

5.3.1. Battery supply issue

For the solar charger to be fully operational as a battery charger, it needs to be connected to a battery.
Although it might look like the solar charger is connected to the battery, it is very well possible that the controller is not receiving
the battery supply, there is no voltage at the battery terminals of the solar charger.
Possible causes can be:
• Loose or missing battery cables.
• Loose cable connections, or badly crimped cable terminals.
• A blown (or missing) fuse in the battery supply cable.
• Open (or faulty) circuit breaker in the battery supply cable.
• Missing or incorrectly wired battery cables.
Battery voltage check
1. Use the VictronConnect app, a connected display or a GX device to find out what the battery terminal voltage of the controller
is. If this is unavailable use a multi meter to measure the battery voltage at the terminals of the controller.
2. Use a multi meter to measure the voltage at the battery terminals.
3. Compare the two voltages.
4. If the battery voltage and the controller voltage are not the same, then investigate why this is. Follow the path from the
controller to the battery to investigate what could be the cause.
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Isolated SmartSolar MPPT RS
VictronConnect – link to "why is the charger off"
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Troubleshooting Guide - MPPT