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adrianp105 asked

SmartSolar MPPT 75/15 Load Output Settings

I will be utilizing the load output on my SmartSolar MPPT 75/15s (3 of them for different arrays). All my loads will be 12v DC. Do I just set the output at 12v or do I need to calculate for voltage drop through the bus/wire?

MPPT Controllersdc system
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kevgermany answered ·

Voltage on load output is battery voltage. The setting is used to disconnect the load to prevent excessive battery discharge.

If you have light loads, 12V or higher would be good. But heavier loads can cause battery voltage to drop while the load is there.

The setting is useful, but needs to be tweaked according to conditions in your installation.

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adrianp105 avatar image adrianp105 commented ·

Excellent. Just to make sure I understand, I should start at 12v for the load output setting and then monitor for voltage drop while there is load and adjust accordingly?

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