Solar Panel Circuit

I am not sure why you said 2pcs of 120ah12v battries in series.

Solar panel circuit. Dc is then converted into alternating current ac through a device called an inverter. Using the solar light ic all you need is the solar ic an inductor and the ultra bright led to make the circuit. Add the battery and the solar cell and you have a solar light. In order to regulate the voltage from the solar panel normally a voltage regulator circuit is used in between the solar panel output and the battery input.

Dividing by 50 depth of discharge as you choose flooded that is 18000 0 5 36000wh or divde by 0 8 if for agm batteries that is 18000 0 8 22500wh. This one way valve allows current to flow from the solar panel to the battery but does not allow current to flow backwards out of the battery through the solar panel. When you connect the positive terminal of one panel to the negative terminal of another panel you create a series connection. The solar panel voltage specs may be anywhere between 18v and 24v.

Just like a battery solar panels have two terminals. Basically that is 1500w 12 18000wh. He needs batteres to supply the 1500w loads for 12hours at night. This circuit makes sure that the voltage from the solar panel never exceeds the safe value required by the battery for charging.

Between the two is a reverse blocking diode. A relay is introduced in the circuit and is wired with the led module such that it s switched on only during the night or when it s dark below threshold for the solar panel to generate the required any power. One positive and one negative. In this circuit the solar panel charges up a 3 cell nimh battery 3 6 v.

Solar light ics are very handy they have the dark detection circuit and the voltage multiplying led driver built into one small four pin component.