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Dan avatar image
Dan asked

Smartsolar with 2x6v series (12v system)

New to the solar game. Added a Smartsolar 100/20 48v unit to my toy hauler. It has a two 6v batteries wired in series (trailer has a 12v system). I am curious if I need to adjust the voltage thresholds for the charger, since voltage characteristics are different in a 2x6 series versus a 2x12 parallel system. Has anyone encountered this type of setup? What did you end up doing?

MPPT SmartSolar
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Mike Dorsett answered ·

The voltage characteristics are more dependent on the chemistry and construction of the battery than on whether you have 2x6V series or 2 x 12V parallel. Check the manufacturer's data for the operating voltages for the 6V batteries and double them. The MPPT can then be configured to these voltages.

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