I had this mppt charging two 12 volt lithium iron phosphates and it was working fine. Today, I got a 48 volt inverter and configured 4 batteries for 48 volts and it doesn't seem to be charging anymore. It shows 42 volts coming in from the solar panels but it does not show any watts at all and the charging indicator is not on. I don't know what I may have done wrong.
I thought it might have been because I top balanced all the batteries before I linked to them together so maybe it wasn't charging because the batteries were all ready full. But, I put a hair dryer and a refrigerator on the inverter to bring the batteries down and they came clear down to 95 or 96% soc and the mppt still showed nothing. Each battery BMS also shows me that they are not receiving a charge anymore. I'm really scared I might have fried something but, I'm pretty damn sure I did it all by the book. Any help is appreciated. Thanks gentlemen.
I thought it might have been because I top balanced all the batteries before I linked to them together so maybe it wasn't charging because the batteries were all ready full. But, I put a hair dryer and a refrigerator on the inverter to bring the batteries down and they came clear down to 95 or 96% soc and the mppt still showed nothing. Each battery BMS also shows me that they are not receiving a charge anymore. I'm really scared I might have fried something but, I'm pretty damn sure I did it all by the book. Any help is appreciated. Thanks gentlemen.