I have those exact Renogy controllers. Expect that the four connections live to come loose. You solder the ends of the wires for a better grip. They want to charge around 14 volts on four settings. A bit high for my systems. I don't have the gadget to reprogram them. I like my homemade adjustable controller much better, but these are a lot simpler than most of the Amazon controllers. I run very little on the camper sized pure sine wave inverter.
If you enlarge to two 12 volt batteries, run them on separate chargers and connect them to separate loads. This isolates them so they don't fight each other. Chasing false goals and batteries in parallel are the most common griefs in land or sea solar panel systems. If you need a lighter load, buy a small 12 volt chest freezer and always run it on ECO mode, to prolong appliance life. The big fridge can then hold your charts, binoculars, and cameras.
I have those exact Renogy controllers. Expect that the four connections live to come loose. You solder the ends of the wires for a better grip. They want to charge around 14 volts on four settings. A bit high for my systems. I don't have the gadget to reprogram them. I like my homemade adjustable controller much better, but these are a lot simpler than most of the Amazon controllers. I run very little on the camper sized pure sine wave inverter.
If you enlarge to two 12 volt batteries, run them on separate chargers and connect them to separate loads. This isolates them so they don't fight each other. Chasing false goals and batteries in parallel are the most common griefs in land or sea solar panel systems. If you need a lighter load, buy a small 12 volt chest freezer and always run it on ECO mode, to prolong appliance life. The big fridge can then hold your charts, binoculars, and cameras.
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