Load not working on PWM controller
I have a cheap Chinese-made PWM controller. It has the standard +/- Solar inputs, Battery Connection and the Load connections. The panels total about 190 watts, but of course never rate that much. I am getting only about 2.5 amps to 5 amps depending upon the sun. My problem is that the load screws never don't seem to have any output. I can connect a cable with 12v plug and insert a USB adapter. My phone only comes on every half minute or so. Then, it only stays connected for about 5-10 seconds then shuts off. If I connect the same wire and 12v/USB connector, it charges my battery just fine. Why am I unable to make a solid connection when I go through the load screw terminals? The only thing I can "see", is PERHAPS the phone takes a charge briefly when the panel input voltage drops from about 14.2 to 13.x. I may be imagining that relationship though.
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