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tamirlance avatar image

SmartSolar MPPT 75/10 without battery

Is it possible to use the SmartSolar MPPTs without a battery? I want to use the MPPT to keep the panel at the max power point and use the logging features of the unit but I'm dumping all the power into a power resistor. I don't want the charge or health of the battery to interfere with whether or not the MPPT is working or not.

MPPT - Solar Charge Controllerbattery charging
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WKirby avatar image

No these devices are not designed for load diversion and cannot be configured as such.

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Moz avatar image

I'd like to know too, since I'd like to dump excess power into a hot water heater once the batteries are full.

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Porcini avatar image

That definitively doesn't work. The actual MPPT-Controllers are battery-powered. They won't even turn on.
Further you can't hold a solar panel at its MPP when a resistor is the load. The resistor defines the operating point.

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I noticed my mppts keep on w/o battery