Forum Discussion
Almot
Feb 25, 2014Explorer III
Read maybe this on battery charging - from the diagram and below.
Battery CAN and SHOULD go to 14-something volts by the end of charging process, which can occur by late morning, or mid-day, or later (or never, if your battery is too low and solar harvest is too poor because of weather or because the panel is small).
Yes, 7-pin pigtail might be convenient for low-current controllers, though I don't like it for the following reasons:
1) Voltage drop. With my 30A array the drop would not only be very high, but probably would burn those thin pigtail wires, I think they are only designed for 10A per lead.
2) This plug is exposed to elements and brass contacts on my plug are more green than yellow now. Less contact = higher losses.
3) God only knows what is connected to what contact on that 7-pin plug. There are few different wiring diagrams for this plug, depending on the manufacturer.
Battery CAN and SHOULD go to 14-something volts by the end of charging process, which can occur by late morning, or mid-day, or later (or never, if your battery is too low and solar harvest is too poor because of weather or because the panel is small).
Yes, 7-pin pigtail might be convenient for low-current controllers, though I don't like it for the following reasons:
1) Voltage drop. With my 30A array the drop would not only be very high, but probably would burn those thin pigtail wires, I think they are only designed for 10A per lead.
2) This plug is exposed to elements and brass contacts on my plug are more green than yellow now. Less contact = higher losses.
3) God only knows what is connected to what contact on that 7-pin plug. There are few different wiring diagrams for this plug, depending on the manufacturer.
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