Pv Yield Lower Than Expected; Maximum Output Power Relates To Battery Voltage - Victron energy SmartSolar MPPT 100/30 Manual

MPPT solar charger manual
• There may be an issue with the battery. Refer to the Batteries are not charged [44] and Batteries are undercharged [48]
chapters.

8.8.1. PV yield lower than expected

If the PV yield is not meeting expectations, start by checking the solar charger history in the VictronConnect app. Verify the total
maximum power (Pmax) for each day and compare it with the array power.
To determine the potential solar yield per day for a specific PV array size in a particular geographical location, utilise the MPPT
sizing calculator on the solar charger product page.
List of reasons why the PV array may generate less power than expected:
• Low sun angle (morning or evening) or seasonal differences.
• Cloud cover or adverse weather conditions.
• Shading from trees or buildings.
• Dirty solar panels.
• Incorrect orientation or inclination of the solar panels.
• Broken or faulty solar panels.
• Issues with wiring, fuses, circuit breakers, or there is a cable voltage drop.
• Incorrect usage or malfunctioning splitters or combiners.
• Part of the PV array is not functioning correctly.
• The PV array is too small for the desired output.
• Mistakes in solar array configuration.
• The batteries may be too small or aging, resulting in a reduced capacity.
VictronConnect app history Pmax reading.

8.8.2. Maximum output power relates to battery voltage

The solar charger's output current is limited to its rated current, resulting in varying output power depending on the battery's
voltage.
For instance:
In a 75/15 solar charger with a 15A output current rating, the power going into the battery will differ for a 12V battery and a 24V
battery.
• For a 12V battery, this is 15A x 12V = 180W.
• For a 24V battery, this is 15A x 24V = 360W.
Page 53 Troubleshooting