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This is my first foray into anything electrical so excuse any ignorance. I have a small system hooked up in my truck centered on the Renogy 50A Dual Input MPPT with a single 100W solar panel and a 100Wh LiFePo4 battery. The system worked flawlessly, keeping the battery full or near full for...

Thanks for the response mikefitz Yes this happens at all voltages, from low to full. No breakers just in line fuses. It seems as if when the MPPT is receiving charge from either the alternator or the solar panel, it must think the flow is coming from the house battery. I really don't know. I...