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I have a Victron MPPT 100/30 and need advise how to configure it for 3 Lead Carbon batteries (parallell).
Any changes needed?
The spec for the battery: https://www.solarfam.nl/12v-200ah-solarfam-lead-carbon-battery.html
What temperature compensation should I use?
You need to ask the battery manufacturer what their requirements are, we can't do that here.
It should be included on a detailed battery spec sheet.
If you read the page you linked to it has the information for example it gives -5mV/'C for cycle charge. That seems lower than expected, that could be a value per cell so -30mV/'C may be required. Ask your supplier to confirm the value for the battery.
