Set the ADj resistor to 40% then execute run.
Then adj the resistor to 2.34vdc(72.4%) to see the signals runnning.
When the DC voltage of 13.2v(battery) near the Adj resistor (preset to 2.34vdc). The output opamp (purple signal ) becomes high.
When the DC voltage (battery) reaches 14.3vdc. The purple signal goes low.
LED is triggered on to indicate a fully changed battery. the other DC power (solar panel) is a constant variable at 14.6vdc (possibly higher). The Oamp used for this setup is the LM324 quad