Question about the output from my DIY Solar
So I could use a "shove in the right direction." My Solar is all DIY. Two 100 watt panels, an EPEver 30A MPPT controller. One group 27 (for now). It's working. It's keeping the battery charged. ...
Forum Discussion
If concerned check the wattage coming off the panels. It should be about 18.7 or so in any light.
Looking at the MPPT output is only going to tell you what the charger thinks the batteries need at that moment, so, yes, it should almost always be less than maximum unless the batteries are low or power demand is high somewhat.
What panels are they, glass or flexible? It would be more common for a flexible panel to go bad as they typically are installed flat on the roof so do not have any ventilation under the panel; they get very hot and the tiny wires and connections can melt or burn or get other heat-related damage. A glass panel mounted correctly should last for years.
Also, tip: Run the two panels in series to the MPPT controller (it is probably ready for either 12 or 24 volt (18 or 37 volt at the panel) input and it will output either 12 or 24 depending on what the battery it, and it will know all by itself usually.
In series will be more efficient.
Looking at the MPPT output is only going to tell you what the charger thinks the batteries need at that moment, so, yes, it should almost always be less than maximum unless the batteries are low or power demand is high somewhat.
What panels are they, glass or flexible? It would be more common for a flexible panel to go bad as they typically are installed flat on the roof so do not have any ventilation under the panel; they get very hot and the tiny wires and connections can melt or burn or get other heat-related damage. A glass panel mounted correctly should last for years.
Also, tip: Run the two panels in series to the MPPT controller (it is probably ready for either 12 or 24 volt (18 or 37 volt at the panel) input and it will output either 12 or 24 depending on what the battery it, and it will know all by itself usually.
In series will be more efficient.
