This is a basic setup where both the mppt CC & the fridge will be connected directly to the batteries terminals, the CC has no load output. Say a 250W portable panel.
First off my understanding is that the fridge will draw power mostly from the CC in full sunlight & mostly from the Battery in overcast. In full sunlight with a topped up battery the current coming out of the CC wont go into the battery & should "bypass" the battery & be drawn straight to the fridge as the CC has the highest voltage & the fridge cables have the lowest resistance.
Overall on a sunny day the battery should stay in a high SoC with low discharge cycles. If the load device starts to approach the panels amp rating even in full sunlight the battery SoC will drop.
Is this all correct? If not please state exactly.
But.
What exactly happens if cc is in absorption or float and the fridge is turned on drawing the usual 3-4amps?
Will the fridge get most of it's current from the CC while the CC is still able to monitor & maintain the battery in float?
thanks
First off my understanding is that the fridge will draw power mostly from the CC in full sunlight & mostly from the Battery in overcast. In full sunlight with a topped up battery the current coming out of the CC wont go into the battery & should "bypass" the battery & be drawn straight to the fridge as the CC has the highest voltage & the fridge cables have the lowest resistance.
Overall on a sunny day the battery should stay in a high SoC with low discharge cycles. If the load device starts to approach the panels amp rating even in full sunlight the battery SoC will drop.
Is this all correct? If not please state exactly.
But.
What exactly happens if cc is in absorption or float and the fridge is turned on drawing the usual 3-4amps?
Will the fridge get most of it's current from the CC while the CC is still able to monitor & maintain the battery in float?
thanks
Comment