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Simon Phillips avatar image
Simon Phillips asked

Max Temp compensated charge voltage for Victron deep Cycle AGM Batteries

I have a max charge voltage setting on my charge controller . I have temp compensation set up at -4mv per cell as per the data sheet . Is there a max charge voltage the batteries will take when very cold ? I note the Absorption range is up to 14.6volt or 14.9 volt fast charge , should 14.9v be the highest even at low temperatures of 5 degrees and under ? or does it not matter and I should set at 15.5 v or something ?

MPPT ControllersAGM Batterytemperature compensation
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Alexandra avatar image Alexandra ♦ commented ·

@Simon Phillips

Set the battery voltage to what is recommended by datasheet.

The mppt measures and compensates for the temperate itself. It is described in this thread here.

https://community.victronenergy.com/questions/1643/how-the-internal-temperature-compensation-feature.html

If you would like better temperature monitoring as it moves through the day. Add a Smart Battery Sense or something similar to the system.

https://www.victronenergy.com/accessories/smart-battery-sense


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